CVE-2026-41080

libexpat before 2.8.0 uses insufficient entropy, and thus hash flooding can occur via a crafted XML document.

libexpat before 2.8.0 uses insufficient entropy, and thus hash flooding can occur via a crafted XML document.

libexpat before 2.8.0 uses insufficient entropy, and thus hash flooding can occur via a crafted XML document.

expat is a stream-oriented XML parser library written in C. expat excels with files too large to fit RAM, and where performance and flexibility are crucial.

Security Fix(es):

libexpat before 2.8.0 uses insufficient entropy, and thus hash flooding can occur via a crafted XML document.(CVE-2026-41080)

expat is a stream-oriented XML parser library written in C. expat excels with files too large to fit RAM, and where performance and flexibility are crucial.

Security Fix(es):

libexpat before 2.8.0 uses insufficient entropy, and thus hash flooding can occur via a crafted XML document.(CVE-2026-41080)

expat is a stream-oriented XML parser library written in C. expat excels with files too large to fit RAM, and where performance and flexibility are crucial.

Security Fix(es):

libexpat before 2.8.0 uses insufficient entropy, and thus hash flooding can occur via a crafted XML document.(CVE-2026-41080)

expat is a stream-oriented XML parser library written in C. expat excels with files too large to fit RAM, and where performance and flexibility are crucial.

Security Fix(es):

libexpat before version 2.7.6 uses insufficient entropy, allowing attackers to cause hash flooding via a crafted XML document.(CVE-2026-41080)

expat is a stream-oriented XML parser library written in C. expat excels with files too large to fit RAM, and where performance and flexibility are crucial.

Security Fix(es):

libexpat before version 2.7.6 uses insufficient entropy, allowing attackers to cause hash flooding via a crafted XML document.(CVE-2026-41080)

Root has patched CVE-2026-41080 in the expat package for Root:Debian:12. Multiple fixed versions available.

Root has patched CVE-2026-41080 in the expat package for Root:Debian:13. Multiple fixed versions available.

libexpat before 2.8.0 uses insufficient entropy, and thus hash flooding can occur via a crafted XML document.

libexpat before 2.8.0 uses insufficient entropy, and thus hash flooding can occur via a crafted XML document.

• SECURITY UPDATE: insufficient entropy in XML hash-flooding protection
  • debian/patches/CVE-2026-41080.patch: extract a full 16-byte hash salt and add XML_SetHashSalt16Bytes (backport of libexpat PR #1183).
  • CVE-2026-41080

• CVE-2026-41080: fix hash-flooding DoS from insufficient salt entropy by extracting a full 16-byte hash salt and adding the XML_SetHashSalt16Bytes API

• CVE-2026-41080: fix hash-flooding DoS from insufficient salt entropy by extracting a full 16-byte hash salt and adding the XML_SetHashSalt16Bytes API

• CVE-2026-41080: fix hash-flooding DoS from insufficient salt entropy by extracting a full 16-byte hash salt and adding the XML_SetHashSalt16Bytes API

• CVE-2026-41080: fix hash-flooding DoS from insufficient salt entropy by extracting a full 16-byte hash salt and adding the XML_SetHashSalt16Bytes API

• CVE-2026-41080: fix hash-flooding DoS caused by insufficient salt entropy by backporting SipHash-2-4 keyed hashing with a 16-byte salt sourced from /dev/urandom

• CVE-2026-41080: fix hash-flooding DoS caused by insufficient salt entropy by backporting SipHash-2-4 keyed hashing with a 16-byte salt sourced from /dev/urandom

• CVE-2026-41080: fix hash-flooding DoS caused by insufficient salt entropy by backporting SipHash-2-4 keyed hashing with a 16-byte salt sourced from /dev/urandom

• SECURITY UPDATE: insufficient entropy in XML hash-flooding protection
  • debian/patches/CVE-2026-41080.patch: backport SipHash-2-4 keyed hashing with a 16-byte salt and add XML_SetHashSalt16Bytes (libexpat PR #1183).
  • CVE-2026-41080

• SECURITY UPDATE: hash flooding via crafted XML caused by insufficient entropy in the hash secret salt
  • debian/patches/CVE-2026-41080.patch: migrate hash salt storage to a full 128-bit struct sipkey and extract 16 bytes of entropy (instead of 4 to 8) in expat/lib/xmlparse.c; add XML_SetHashSalt16Bytes() API in expat/lib/expat.h for supplying a full 128-bit salt
  • debian/libexpat1.symbols: add new XML_SetHashSalt16Bytes symbol
  • CVE-2026-41080

• SECURITY UPDATE: Insufficient entropy used for hash flooding protection allowing hash flooding via a crafted XML document (libexpat before 2.8.0)
  • debian/patches/CVE-2026-41080.patch: extract 16 bytes of entropy into a 128-bit SipHash key for hash flooding protection, and add the new XML_SetHashSalt16Bytes() API (backport of upstream PR #1183)
  • debian/libexpat1.symbols: add XML_SetHashSalt16Bytes
  • CVE-2026-41080

• CVE-2026-41080: extract 16 bytes of entropy for the hash salt to prevent hash flooding

• CVE-2026-7210: seed Expat with 16 bytes of hash salt via XML_SetHashSalt16Bytes when the linked libexpat exposes it, fixing the hash-flooding entropy gap in pyexpat and xml.etree.ElementTree
• require expat >= 2.5.0-1.el9_2.tuxcare.els12 (CVE-2026-41080, XML_SetHashSalt16Bytes) so the runtime mitigation is guaranteed in effect

• CVE-2026-41080: backport SipHash-based hash-flooding protection with a full 16 bytes of salt entropy and add the XML_SetHashSalt16Bytes() API

• CVE-2026-41080: backport SipHash-based hash-flooding protection with a full 16 bytes of salt entropy and add the XML_SetHashSalt16Bytes() API

• CVE-2026-7210: seed pyexpat/_elementtree with 16-byte XML hash salt via XML_SetHashSalt16Bytes; detect the symbol at runtime through a weak declaration so the fix engages against system libexpat 2.5.0 with the CVE-2026-41080 backport; add hard Requires on expat >= 2.5.0-1.el9_2.tuxcare.els12

• CVE-2026-7210: seed Expat's hash-flooding protection with a full 16 bytes (128 bits) of entropy via XML_SetHashSalt16Bytes() when the loaded libexpat provides it (detected via a weak symbol), instead of the brute-forceable 8-byte XML_SetHashSalt(); the pyexpat CAPI gains a SetHashSalt16Bytes pointer appended at the end of the struct (capsule magic unchanged) and _Py_HashSecret_t gains a 16-byte hashsalt16 field. Both call sites fall back to the legacy 8-byte API when the salt is all zeros (hash randomization off, the default) so Expat keeps self-seeding. Paired with the libexpat CVE-2026-41080 backport that exports the symbol; requires expat >= 2.1.0-15.0.7.el7_9.tuxcare.els3, the release shipping it

• CVE-2026-7210: seed Expat's hash-flooding protection with a full 16 bytes (128 bits) of entropy via XML_SetHashSalt16Bytes() when the loaded libexpat provides it (detected via a weak symbol), instead of the brute-forceable 8-byte XML_SetHashSalt(); the pyexpat CAPI gains a SetHashSalt16Bytes pointer appended at the end of the struct (capsule magic unchanged) and _Py_HashSecret_t gains a 16-byte hashsalt16 field. Both call sites fall back to the legacy 8-byte API when the salt is all zeros (hash randomization off, the default) so Expat keeps self-seeding. Paired with the libexpat CVE-2026-41080 backport that exports the symbol; requires expat >= 2.1.0-15.0.7.el7_9.tuxcare.els3, the release shipping it

• CVE-2026-7210: seed Expat's hash-flooding protection with a full 16 bytes (128 bits) of entropy via XML_SetHashSalt16Bytes() when the loaded libexpat provides it (detected via a weak symbol), instead of the brute-forceable 8-byte XML_SetHashSalt(); the pyexpat CAPI gains a SetHashSalt16Bytes pointer appended at the end of the struct (capsule magic unchanged) and _Py_HashSecret_t gains a 16-byte hashsalt16 field. Both call sites fall back to the legacy 8-byte API when the salt is all zeros (hash randomization off, the default) so Expat keeps self-seeding. Paired with the libexpat CVE-2026-41080 backport that exports the symbol; requires expat >= 2.1.0-15.0.7.el7_9.tuxcare.els3, the release shipping it

These are all security issues fixed in the expat-2.8.1-1.1 package on the GA media of openSUSE Tumbleweed.

This update for expat fixes the following issues:

• CVE-2026-41080: crafted XML document can cause a denial of service (bsc#1262263).
• CVE-2026-45186: In libexpat before 2.8.1, the computational complexity of attribute name collision checks allows a denial of service via moderately sized crafted XML input (bsc#1264713).
• CVE-2026-50219: libexpat before 2.8.2 lacks handler call depth tracking for calls to XML_GetBuffer, XML_Parse, XML_ParseBuffer, XML_ParserFree, or XML_ParserReset from within handlers in cases of a policy violation (bsc#1267631).
• CVE-2026-56131: libexpat before 2.8.2 lacks handler call depth tracking for calls to XML_ResumeParser from within handlers in cases of a policy violation (bsc#1268572).
• CVE-2026-56132: mishandled memory reallocation during array scaffolding in doProlog can cause heap-based buffer overflows (bsc#1268573).
• CVE-2026-56403: integer overflow in the storeAtts function can cause memory corruption and potential arbitrary code execution (bsc#1275096).
• CVE-2026-56404: integer overflow in the addBinding function can cause undersized memory allocations, memory corruption, and application crashes (bsc#1275096).
• CVE-2026-56405: integer overflow in the getAttributeId function can cause heap memory corruption and arbitrary code execution (bsc#1275096).
• CVE-2026-56406: missing bounds validation in XML_ParseBuffer can cause integer overflows, memory corruption, and application crashes (bsc#1275096).
• CVE-2026-56407: integer overflow in doProlog related to entity text length can cause memory corruption and denial of service (bsc#1275096).
• CVE-2026-56408: integer overflow in the copyString function can cause heap memory corruption and application crashes (bsc#1275096).
• CVE-2026-56409: integer overflow in the xmlwf utility output filename handling can allow path buffer corruption and arbitrary file write conditions (bsc#1275096).
• CVE-2026-56410: integer overflow in resolveSystemId within the xmlwf utility can cause memory corruption, information disclosure, and potential code execution (bsc#1275096).
• CVE-2026-56411: integer overflow in endDoctypeDecl via NOTATION declarations in xmlwf can cause memory corruption and denial of service (bsc#1275096).
• CVE-2026-56412: incomplete handler call depth tracking in doCdataSection can cause use-after-free conditions and arbitrary code execution (bsc#1275096).
• CVE-2026-66046: libexpat: denial of service vulnerability caused by quadratic algorithmic complexity in the storeAtts() function in xmlparse.c (bsc#1275732).
• CVE-2026-72522: libexpat: out-of-bounds read and resultant infinite loop due to low surrogates being treated the same as high surrogates during Unicode processing (bsc#1275594).
• CVE-2026-76641: Expat through 2.8.3 contains an out-of-bounds read vulnerability that allows attackers to trigger memory corruption (bsc#1275915).
• CVE-2026-76956: In libexpat 2.8.2 and 2.8.3 before 2.8.4, misinterpretation of getentropy's return code leads to insufficient entropy, which results in being vulnerable to hash flooding attacks, causing a denial of service via crafted X (bsc#1275860).
• CVE-2026-76957: libexpat before 2.8.4 lacks handler call depth tracking with custom encoding callbacks. (bsc#1275859).

Changes for expat:

• Updated to version 2.8.4

This update for MozillaFirefox fixes the following issues: Firefox Extended Support Release 153.5.0 ESR (MFSA 2026-108, bsc#1284493):

• CVE-2026-109704: Privilege escalation in the Application Update component.
• CVE-2026-109705: Sandbox escape, site isolation issue due to incorrect boundary conditions, use-after-free in the Networking component.
• CVE-2026-109706: Use-after-free in the Storage: IndexedDB component.
• CVE-2026-109707: Sandbox escape due to use-after-free in the Networking component.
• CVE-2026-109708: Sandbox escape due to incorrect boundary conditions in the Networking component.
• CVE-2026-109709: Information disclosure, privilege escalation in the Security: Process Sandboxing component.
• CVE-2026-109710: Use-after-free in the Graphics: Text component.
• CVE-2026-109711: Use-after-free in the Graphics: Canvas2D component.
• CVE-2026-109712: Sandbox escape due to uninitialized memory in the Graphics component.
• CVE-2026-109713: Use-after-free in the Crash Reporting component.
• CVE-2026-109715: Incorrect boundary conditions in the JavaScript Engine component.
• CVE-2026-109716: Incorrect boundary conditions in the JavaScript Engine component.
• CVE-2026-109717: Use-after-free in the DOM: Bindings (WebIDL) component.
• CVE-2026-109718: Use-after-free in the XML component.
• CVE-2026-109719: Race condition, use-after-free in the Graphics: CanvasWebGL component.
• CVE-2026-109720: JIT miscompilation in the JavaScript: WebAssembly component.
• CVE-2026-109721: Incorrect boundary conditions in the JavaScript Engine: JIT component.
• CVE-2026-109722: JIT miscompilation in the JavaScript Engine: JIT component.
• CVE-2026-109723: Integer overflow in the Layout: Text and Fonts component.
• CVE-2026-109724: Use-after-free in the DOM: Core & HTML component.
• CVE-2026-109725: Use-after-free in the DOM: Core & HTML component.
• CVE-2026-109726: Use-after-free in the SVG component.
• CVE-2026-109727: Use-after-free in the Audio/Video component.
• CVE-2026-109728: Use-after-free in the DOM: Animation component.
• CVE-2026-109729: Use-after-free in the JavaScript Engine: JIT component.
• CVE-2026-109730: Integer overflow in the Graphics component.
• CVE-2026-109731: Incorrect boundary conditions in the Graphics: Canvas2D component.
• CVE-2026-109732: Use-after-free in the DOM: Streams component.
• CVE-2026-109733: JIT miscompilation in the JavaScript Engine: JIT component.
• CVE-2026-109734: Mitigation bypass in the DOM: Security component.
• CVE-2026-109736: Frame poisoning in the Layout component.
• CVE-2026-109737: Mitigation bypass in the Enterprise Policies component.
• CVE-2026-109738: Use-after-free in the Audio/Video: Playback component.
• CVE-2026-109740: Sandbox escape due to incorrect boundary conditions in the Widget: Win32 component.
• CVE-2026-109741: Use-after-free in the Storage: Bucket File System component.
• CVE-2026-109742: Information disclosure in the PDF Viewer component.
• CVE-2026-109743: Privilege escalation in the Panning and Zooming component.
• CVE-2026-109744: Other issue in the DOM: File component.
• CVE-2026-109745: Sandbox escape due to uninitialized memory in the DOM: Web Serial component.
• CVE-2026-109751: Information disclosure in the Networking component.
• CVE-2026-109752: Use-after-free in the DOM: Workers component.
• CVE-2026-109753: Incorrect boundary conditions in the Layout component.
• CVE-2026-109754: Incorrect boundary conditions in the DOM: Editor component.
• CVE-2026-109756: Privilege escalation in the DOM: Navigation component.
• CVE-2026-109757: Sandbox escape due to race condition in the Networking component.
• CVE-2026-109759: Site isolation issue in the Networking component.
• CVE-2026-109760: Mitigation bypass in the Networking: HTTP component.
• CVE-2026-109762: Incorrect boundary conditions in the SVG component.
• CVE-2026-109763: Mitigation bypass in the File Handling component.
• CVE-2026-109764: Mitigation bypass in the Enterprise Policies component. -…

This update for expat fixes the following issues:

• CVE-2026-41080: crafted XML document can cause a denial of service (bsc#1262263).
• CVE-2026-45186: In libexpat before 2.8.1, the computational complexity of attribute name collision checks allows a denial of service via moderately sized crafted XML input (bsc#1264713).
• CVE-2026-50219: libexpat before 2.8.2 lacks handler call depth tracking for calls to XML_GetBuffer, XML_Parse, XML_ParseBuffer, XML_ParserFree, or XML_ParserReset from within handlers in cases of a policy violation (bsc#1267631).
• CVE-2026-56131: libexpat before 2.8.2 lacks handler call depth tracking for calls to XML_ResumeParser from within handlers in cases of a policy violation (bsc#1268572).
• CVE-2026-56132: mishandled memory reallocation during array scaffolding in doProlog can cause heap-based buffer overflows (bsc#1268573).
• CVE-2026-56403: integer overflow in the storeAtts function can cause memory corruption and potential arbitrary code execution (bsc#1275096).
• CVE-2026-56404: integer overflow in the addBinding function can cause undersized memory allocations, memory corruption, and application crashes (bsc#1275096).
• CVE-2026-56405: integer overflow in the getAttributeId function can cause heap memory corruption and arbitrary code execution (bsc#1275096).
• CVE-2026-56406: missing bounds validation in XML_ParseBuffer can cause integer overflows, memory corruption, and application crashes (bsc#1275096).
• CVE-2026-56407: integer overflow in doProlog related to entity text length can cause memory corruption and denial of service (bsc#1275096).
• CVE-2026-56408: integer overflow in the copyString function can cause heap memory corruption and application crashes (bsc#1275096).
• CVE-2026-56409: integer overflow in the xmlwf utility output filename handling can allow path buffer corruption and arbitrary file write conditions (bsc#1275096).
• CVE-2026-56410: integer overflow in resolveSystemId within the xmlwf utility can cause memory corruption, information disclosure, and potential code execution (bsc#1275096).
• CVE-2026-56411: integer overflow in endDoctypeDecl via NOTATION declarations in xmlwf can cause memory corruption and denial of service (bsc#1275096).
• CVE-2026-56412: incomplete handler call depth tracking in doCdataSection can cause use-after-free conditions and arbitrary code execution (bsc#1275096).
• CVE-2026-66046: libexpat: denial of service vulnerability caused by quadratic algorithmic complexity in the storeAtts() function in xmlparse.c (bsc#1275732).
• CVE-2026-72522: libexpat: out-of-bounds read and resultant infinite loop due to low surrogates being treated the same as high surrogates during Unicode processing (bsc#1275594).
• CVE-2026-76641: Expat through 2.8.3 contains an out-of-bounds read vulnerability that allows attackers to trigger memory corruption (bsc#1275915).
• CVE-2026-76956: In libexpat 2.8.2 and 2.8.3 before 2.8.4, misinterpretation of getentropy's return code leads to insufficient entropy, which results in being vulnerable to hash flooding attacks, causing a denial of service via crafted X (bsc#1275860).
• CVE-2026-76957: libexpat before 2.8.4 lacks handler call depth tracking with custom encoding callbacks. (bsc#1275859).

Changes for expat:

• Updated to version 2.8.4

This update for expat fixes the following issues:

• CVE-2026-41080: crafted XML document can cause a denial of service (bsc#1262263).
• CVE-2026-45186: In libexpat before 2.8.1, the computational complexity of attribute name collision checks allows a denial of service via moderately sized crafted XML input (bsc#1264713).
• CVE-2026-50219: libexpat before 2.8.2 lacks handler call depth tracking for calls to XML_GetBuffer, XML_Parse, XML_ParseBuffer, XML_ParserFree, or XML_ParserReset from within handlers in cases of a policy violation (bsc#1267631).
• CVE-2026-56131: libexpat before 2.8.2 lacks handler call depth tracking for calls to XML_ResumeParser from within handlers in cases of a policy violation (bsc#1268572).
• CVE-2026-56132: mishandled memory reallocation during array scaffolding in doProlog can cause heap-based buffer overflows (bsc#1268573).
• CVE-2026-56403: integer overflow in the storeAtts function can cause memory corruption and potential arbitrary code execution (bsc#1275096).
• CVE-2026-56404: integer overflow in the addBinding function can cause undersized memory allocations, memory corruption, and application crashes (bsc#1275096).
• CVE-2026-56405: integer overflow in the getAttributeId function can cause heap memory corruption and arbitrary code execution (bsc#1275096).
• CVE-2026-56406: missing bounds validation in XML_ParseBuffer can cause integer overflows, memory corruption, and application crashes (bsc#1275096).
• CVE-2026-56407: integer overflow in doProlog related to entity text length can cause memory corruption and denial of service (bsc#1275096).
• CVE-2026-56408: integer overflow in the copyString function can cause heap memory corruption and application crashes (bsc#1275096).
• CVE-2026-56409: integer overflow in the xmlwf utility output filename handling can allow path buffer corruption and arbitrary file write conditions (bsc#1275096).
• CVE-2026-56410: integer overflow in resolveSystemId within the xmlwf utility can cause memory corruption, information disclosure, and potential code execution (bsc#1275096).
• CVE-2026-56411: integer overflow in endDoctypeDecl via NOTATION declarations in xmlwf can cause memory corruption and denial of service (bsc#1275096).
• CVE-2026-56412: incomplete handler call depth tracking in doCdataSection can cause use-after-free conditions and arbitrary code execution (bsc#1275096).
• CVE-2026-66046: libexpat: denial of service vulnerability caused by quadratic algorithmic complexity in the storeAtts() function in xmlparse.c (bsc#1275732).
• CVE-2026-72522: libexpat: out-of-bounds read and resultant infinite loop due to low surrogates being treated the same as high surrogates during Unicode processing (bsc#1275594).
• CVE-2026-76641: Expat through 2.8.3 contains an out-of-bounds read vulnerability that allows attackers to trigger memory corruption (bsc#1275915).
• CVE-2026-76956: In libexpat 2.8.2 and 2.8.3 before 2.8.4, misinterpretation of getentropy's return code leads to insufficient entropy, which results in being vulnerable to hash flooding attacks, causing a denial of service via crafted X (bsc#1275860).
• CVE-2026-76957: libexpat before 2.8.4 lacks handler call depth tracking with custom encoding callbacks. (bsc#1275859).

Changes for expat:

• Updated to version 2.8.4

This update for MozillaFirefox fixes the following issues: Firefox Extended Support Release 153.5.0 ESR (MFSA 2026-108, bsc#1284493):

• CVE-2026-109704: Privilege escalation in the Application Update component.
• CVE-2026-109705: Sandbox escape, site isolation issue due to incorrect boundary conditions, use-after-free in the Networking component.
• CVE-2026-109706: Use-after-free in the Storage: IndexedDB component.
• CVE-2026-109707: Sandbox escape due to use-after-free in the Networking component.
• CVE-2026-109708: Sandbox escape due to incorrect boundary conditions in the Networking component.
• CVE-2026-109709: Information disclosure, privilege escalation in the Security: Process Sandboxing component.
• CVE-2026-109710: Use-after-free in the Graphics: Text component.
• CVE-2026-109711: Use-after-free in the Graphics: Canvas2D component.
• CVE-2026-109712: Sandbox escape due to uninitialized memory in the Graphics component.
• CVE-2026-109713: Use-after-free in the Crash Reporting component.
• CVE-2026-109715: Incorrect boundary conditions in the JavaScript Engine component.
• CVE-2026-109716: Incorrect boundary conditions in the JavaScript Engine component.
• CVE-2026-109717: Use-after-free in the DOM: Bindings (WebIDL) component.
• CVE-2026-109718: Use-after-free in the XML component.
• CVE-2026-109719: Race condition, use-after-free in the Graphics: CanvasWebGL component.
• CVE-2026-109720: JIT miscompilation in the JavaScript: WebAssembly component.
• CVE-2026-109721: Incorrect boundary conditions in the JavaScript Engine: JIT component.
• CVE-2026-109722: JIT miscompilation in the JavaScript Engine: JIT component.
• CVE-2026-109723: Integer overflow in the Layout: Text and Fonts component.
• CVE-2026-109724: Use-after-free in the DOM: Core & HTML component.
• CVE-2026-109725: Use-after-free in the DOM: Core & HTML component.
• CVE-2026-109726: Use-after-free in the SVG component.
• CVE-2026-109727: Use-after-free in the Audio/Video component.
• CVE-2026-109728: Use-after-free in the DOM: Animation component.
• CVE-2026-109729: Use-after-free in the JavaScript Engine: JIT component.
• CVE-2026-109730: Integer overflow in the Graphics component.
• CVE-2026-109731: Incorrect boundary conditions in the Graphics: Canvas2D component.
• CVE-2026-109732: Use-after-free in the DOM: Streams component.
• CVE-2026-109733: JIT miscompilation in the JavaScript Engine: JIT component.
• CVE-2026-109734: Mitigation bypass in the DOM: Security component.
• CVE-2026-109736: Frame poisoning in the Layout component.
• CVE-2026-109737: Mitigation bypass in the Enterprise Policies component.
• CVE-2026-109738: Use-after-free in the Audio/Video: Playback component.
• CVE-2026-109740: Sandbox escape due to incorrect boundary conditions in the Widget: Win32 component.
• CVE-2026-109741: Use-after-free in the Storage: Bucket File System component.
• CVE-2026-109742: Information disclosure in the PDF Viewer component.
• CVE-2026-109743: Privilege escalation in the Panning and Zooming component.
• CVE-2026-109744: Other issue in the DOM: File component.
• CVE-2026-109745: Sandbox escape due to uninitialized memory in the DOM: Web Serial component.
• CVE-2026-109751: Information disclosure in the Networking component.
• CVE-2026-109752: Use-after-free in the DOM: Workers component.
• CVE-2026-109753: Incorrect boundary conditions in the Layout component.
• CVE-2026-109754: Incorrect boundary conditions in the DOM: Editor component.
• CVE-2026-109756: Privilege escalation in the DOM: Navigation component.
• CVE-2026-109757: Sandbox escape due to race condition in the Networking component.
• CVE-2026-109759: Site isolation issue in the Networking component.
• CVE-2026-109760: Mitigation bypass in the Networking: HTTP component.
• CVE-2026-109762: Incorrect boundary conditions in the SVG component.
• CVE-2026-109763: Mitigation bypass in the File Handling component.
• CVE-2026-109764: Mitigation bypass in the Enterprise Policies component. -…

This update for expat fixes the following issues:

• CVE-2025-59375: denial of service (resource consumption) caused by processing malformed small documents (bsc#1249584).
• CVE-2026-24515: NULL dereference (CWE-476) due to function XML_ExternalEntityParserCreate() failing to copy the encoding handler data passed to XML_SetUnknownEncodingHandler() from the parent to the subparser (bsc#1257144).
• CVE-2026-25210: lack of buffer size check can lead to an integer overflow (bsc#1257496).
• CVE-2026-32776: NULL pointer dereference when processing empty external parameter entities inside an entity declaration value (bsc#1259726).
• CVE-2026-32777: denial of service due to infinite loop in DTD content parsing (bsc#1259711).
• CVE-2026-32778: NULL pointer dereference in setContext on retry after an out-of-memory condition (bsc#1259729).
• CVE-2026-41080: crafted XML document can cause a denial of service (bsc#1262263).
• CVE-2026-45186: denial of service via moderately sized crafted XML input (bsc#1264713).
• CVE-2026-50219: lack of handler call depth tracking for calls to XML_* functions from within handlers in cases of a policy violation (bsc#1267631).
• CVE-2026-56131: lack of handler call depth tracking for calls to XML_ResumeParser from within handlers in cases of a policy violation (bsc#1268572).
• CVE-2026-56132: heap-based buffer overflow in doProlog in xmlparse.c (bsc#1268573).
• CVE-2026-56403,CVE-2026-56404,CVE-2026-56405,CVE-2026-56406, CVE-2026-56407,CVE-2026-56408,CVE-2026-56409,CVE-2026-56410, CVE-2026-56411,CVE-2026-56412: multiple integer overflow vulnerabilities (bsc#1275115).
• CVE-2026-66046: denial of service vulnerability caused by quadratic algorithmic complexity in the storeAtts() function (bsc#1275732).
• CVE-2026-72522: out-of-bounds read and resultant infinite loop due to low surrogates being treated the same as high surrogates during Unicode processing (bsc#1275594).
• CVE-2026-76641: out-of-bounds read vulnerability that allows attackers to trigger memory corruption (bsc#1275915).
• CVE-2026-76956: denial of service via hash flooding attacks (bsc#1275860).
• CVE-2026-76957: lack of handler call depth tracking with custom encoding callbacks. Thus, a use- after-free can occur (bsc#1275859).
• CVE-2026-77214: out-of-bounds read due to insufficient checks in XML_ParseBuffer() (bsc#1284334).
• CVE-2026-93990: fails to validate low surrogates following high surrogates in UTF-16 input (bsc#1282347).
• CVE-2026-102633: Denial of Service via integer overflow in expat_realloc (bsc#1283493).

Update to 2.8.5 (jsc#PED-16154):

• Bug fixes:
• Fix an OOM-related memory leak on a failed overflow check
• Fix memory alignment for architectures with 128bit pointers
• Mark XML_SetHashSalt deprecated
• CMake: only add /source-charset:utf-8 when /utf-8 is not present
• lib: resolve undefined behavior from overshifting a signed int
• lib: support read-only hash table lookup with non-zero-terminated keys
• lib: use a C99 bool for ENTITY.open
• version info bumped from 13:3:12 to 13:4:12
• fix support for 2+ GiB documents (regression from 2.8.2)
• reject empty version in the XML declaration
• fix printf format for AIX
• CMake|AIX: enable EXPAT_DEV_URANDOM by default
• version info bumped from 13:2:12 to 13:3:12
• Existing API function XML_SetHashSalt is now deprecated
• because of its limitations, and its use should be
• considered a vulnerability. Please either use the new API
• function XML_SetHashSalt16Bytes (with known-high-quality
• entropy input only!) instead, or leave the derivation of
• a 16-bytes hash salt from high quality entropy to Expat's
• internal machinery (by not calling either of the two
• XML_SetHashSalt* functions).
• xmlwf: Fix a memory leak
• WASI: Fix format specifiers for 32bit WASI SDK
• Fix alignment of internal allocations for some non-amd64 architectures (e.g. sparc32); fixes up on the fix to CVE-2025-59375 (of Expat 2.7.2)
• Fix a class of…

This update for expat fixes the following issues:

• CVE-2025-59375: denial of service (resource consumption) caused by processing malformed small documents (bsc#1249584).
• CVE-2026-24515: NULL dereference (CWE-476) due to function XML_ExternalEntityParserCreate() failing to copy the encoding handler data passed to XML_SetUnknownEncodingHandler() from the parent to the subparser (bsc#1257144).
• CVE-2026-25210: lack of buffer size check can lead to an integer overflow (bsc#1257496).
• CVE-2026-32776: NULL pointer dereference when processing empty external parameter entities inside an entity declaration value (bsc#1259726).
• CVE-2026-32777: denial of service due to infinite loop in DTD content parsing (bsc#1259711).
• CVE-2026-32778: NULL pointer dereference in setContext on retry after an out-of-memory condition (bsc#1259729).
• CVE-2026-41080: crafted XML document can cause a denial of service (bsc#1262263).
• CVE-2026-45186: denial of service via moderately sized crafted XML input (bsc#1264713).
• CVE-2026-50219: lack of handler call depth tracking for calls to XML_* functions from within handlers in cases of a policy violation (bsc#1267631).
• CVE-2026-56131: lack of handler call depth tracking for calls to XML_ResumeParser from within handlers in cases of a policy violation (bsc#1268572).
• CVE-2026-56132: heap-based buffer overflow in doProlog in xmlparse.c (bsc#1268573).
• CVE-2026-56403,CVE-2026-56404,CVE-2026-56405,CVE-2026-56406, CVE-2026-56407,CVE-2026-56408,CVE-2026-56409,CVE-2026-56410, CVE-2026-56411,CVE-2026-56412: multiple integer overflow vulnerabilities (bsc#1275115).
• CVE-2026-66046: denial of service vulnerability caused by quadratic algorithmic complexity in the storeAtts() function (bsc#1275732).
• CVE-2026-72522: out-of-bounds read and resultant infinite loop due to low surrogates being treated the same as high surrogates during Unicode processing (bsc#1275594).
• CVE-2026-76641: out-of-bounds read vulnerability that allows attackers to trigger memory corruption (bsc#1275915).
• CVE-2026-76956: denial of service via hash flooding attacks (bsc#1275860).
• CVE-2026-76957: lack of handler call depth tracking with custom encoding callbacks. Thus, a use- after-free can occur (bsc#1275859).
• CVE-2026-77214: out-of-bounds read due to insufficient checks in XML_ParseBuffer() (bsc#1284334).
• CVE-2026-93990: fails to validate low surrogates following high surrogates in UTF-16 input (bsc#1282347).
• CVE-2026-102633: Denial of Service via integer overflow in expat_realloc (bsc#1283493).

Changes for expat:

Update to 2.8.5 (jsc#PED-16154):

• Bug fixes:
• Fix an OOM-related memory leak on a failed overflow check
• Fix memory alignment for architectures with 128bit pointers
• Mark XML_SetHashSalt deprecated
• CMake: only add /source-charset:utf-8 when /utf-8 is not present
• lib: resolve undefined behavior from overshifting a signed int
• lib: support read-only hash table lookup with non-zero-terminated keys
• lib: use a C99 bool for ENTITY.open
• version info bumped from 13:3:12 to 13:4:12
• fix support for 2+ GiB documents (regression from 2.8.2)
• reject empty version in the XML declaration
• fix printf format for AIX
• CMake|AIX: enable EXPAT_DEV_URANDOM by default
• version info bumped from 13:2:12 to 13:3:12
• Existing API function XML_SetHashSalt is now deprecated
• because of its limitations, and its use should be
• considered a vulnerability. Please either use the new API
• function XML_SetHashSalt16Bytes (with known-high-quality
• entropy input only!) instead, or leave the derivation of
• a 16-bytes hash salt from high quality entropy to Expat's
• internal machinery (by not calling either of the two
• XML_SetHashSalt* functions).
• xmlwf: Fix a memory leak
• WASI: Fix format specifiers for 32bit WASI SDK
• Fix alignment of internal allocations for some non-amd64 architectures (e.g. sparc32); fixes up on the fix to CVE-2025-59375 (of Expat 2.7.2) …

This update for expat fixes the following issues:

• CVE-2025-59375: denial of service (resource consumption) caused by processing malformed small documents (bsc#1249584).
• CVE-2026-24515: NULL dereference (CWE-476) due to function XML_ExternalEntityParserCreate() failing to copy the encoding handler data passed to XML_SetUnknownEncodingHandler() from the parent to the subparser (bsc#1257144).
• CVE-2026-25210: lack of buffer size check can lead to an integer overflow (bsc#1257496).
• CVE-2026-32776: NULL pointer dereference when processing empty external parameter entities inside an entity declaration value (bsc#1259726).
• CVE-2026-32777: denial of service due to infinite loop in DTD content parsing (bsc#1259711).
• CVE-2026-32778: NULL pointer dereference in setContext on retry after an out-of-memory condition (bsc#1259729).
• CVE-2026-41080: crafted XML document can cause a denial of service (bsc#1262263).
• CVE-2026-45186: denial of service via moderately sized crafted XML input (bsc#1264713).
• CVE-2026-50219: lack of handler call depth tracking for calls to XML_* functions from within handlers in cases of a policy violation (bsc#1267631).
• CVE-2026-56131: lack of handler call depth tracking for calls to XML_ResumeParser from within handlers in cases of a policy violation (bsc#1268572).
• CVE-2026-56132: heap-based buffer overflow in doProlog in xmlparse.c (bsc#1268573).
• CVE-2026-56403,CVE-2026-56404,CVE-2026-56405,CVE-2026-56406, CVE-2026-56407,CVE-2026-56408,CVE-2026-56409,CVE-2026-56410, CVE-2026-56411,CVE-2026-56412: multiple integer overflow vulnerabilities (bsc#1275115).
• CVE-2026-66046: denial of service vulnerability caused by quadratic algorithmic complexity in the storeAtts() function (bsc#1275732).
• CVE-2026-72522: out-of-bounds read and resultant infinite loop due to low surrogates being treated the same as high surrogates during Unicode processing (bsc#1275594).
• CVE-2026-76641: out-of-bounds read vulnerability that allows attackers to trigger memory corruption (bsc#1275915).
• CVE-2026-76956: denial of service via hash flooding attacks (bsc#1275860).
• CVE-2026-76957: lack of handler call depth tracking with custom encoding callbacks. Thus, a use- after-free can occur (bsc#1275859).
• CVE-2026-77214: out-of-bounds read due to insufficient checks in XML_ParseBuffer() (bsc#1284334).
• CVE-2026-93990: fails to validate low surrogates following high surrogates in UTF-16 input (bsc#1282347).
• CVE-2026-102633: Denial of Service via integer overflow in expat_realloc (bsc#1283493).

Update to 2.8.5 (jsc#PED-16154):

• Bug fixes:
• Fix an OOM-related memory leak on a failed overflow check
• Fix memory alignment for architectures with 128bit pointers
• Mark XML_SetHashSalt deprecated
• CMake: only add /source-charset:utf-8 when /utf-8 is not present
• lib: resolve undefined behavior from overshifting a signed int
• lib: support read-only hash table lookup with non-zero-terminated keys
• lib: use a C99 bool for ENTITY.open
• version info bumped from 13:3:12 to 13:4:12
• fix support for 2+ GiB documents (regression from 2.8.2)
• reject empty version in the XML declaration
• fix printf format for AIX
• CMake|AIX: enable EXPAT_DEV_URANDOM by default
• version info bumped from 13:2:12 to 13:3:12
• Existing API function XML_SetHashSalt is now deprecated
• because of its limitations, and its use should be
• considered a vulnerability. Please either use the new API
• function XML_SetHashSalt16Bytes (with known-high-quality
• entropy input only!) instead, or leave the derivation of
• a 16-bytes hash salt from high quality entropy to Expat's
• internal machinery (by not calling either of the two
• XML_SetHashSalt* functions).
• xmlwf: Fix a memory leak
• WASI: Fix format specifiers for 32bit WASI SDK
• Fix alignment of internal allocations for some non-amd64 architectures (e.g. sparc32); fixes up on the fix to CVE-2025-59375 (of Expat 2.7.2)
• Fix a class of…

This update for expat fixes the following issues:

• CVE-2025-59375: denial of service (resource consumption) caused by processing malformed small documents (bsc#1249584).
• CVE-2026-24515: NULL dereference (CWE-476) due to function XML_ExternalEntityParserCreate() failing to copy the encoding handler data passed to XML_SetUnknownEncodingHandler() from the parent to the subparser (bsc#1257144).
• CVE-2026-25210: lack of buffer size check can lead to an integer overflow (bsc#1257496).
• CVE-2026-32776: NULL pointer dereference when processing empty external parameter entities inside an entity declaration value (bsc#1259726).
• CVE-2026-32777: denial of service due to infinite loop in DTD content parsing (bsc#1259711).
• CVE-2026-32778: NULL pointer dereference in setContext on retry after an out-of-memory condition (bsc#1259729).
• CVE-2026-41080: crafted XML document can cause a denial of service (bsc#1262263).
• CVE-2026-45186: denial of service via moderately sized crafted XML input (bsc#1264713).
• CVE-2026-50219: lack of handler call depth tracking for calls to XML_* functions from within handlers in cases of a policy violation (bsc#1267631).
• CVE-2026-56131: lack of handler call depth tracking for calls to XML_ResumeParser from within handlers in cases of a policy violation (bsc#1268572).
• CVE-2026-56132: heap-based buffer overflow in doProlog in xmlparse.c (bsc#1268573).
• CVE-2026-56403,CVE-2026-56404,CVE-2026-56405,CVE-2026-56406, CVE-2026-56407,CVE-2026-56408,CVE-2026-56409,CVE-2026-56410, CVE-2026-56411,CVE-2026-56412: multiple integer overflow vulnerabilities (bsc#1275115).
• CVE-2026-66046: denial of service vulnerability caused by quadratic algorithmic complexity in the storeAtts() function (bsc#1275732).
• CVE-2026-72522: out-of-bounds read and resultant infinite loop due to low surrogates being treated the same as high surrogates during Unicode processing (bsc#1275594).
• CVE-2026-76641: out-of-bounds read vulnerability that allows attackers to trigger memory corruption (bsc#1275915).
• CVE-2026-76956: denial of service via hash flooding attacks (bsc#1275860).
• CVE-2026-76957: lack of handler call depth tracking with custom encoding callbacks. Thus, a use- after-free can occur (bsc#1275859).
• CVE-2026-77214: out-of-bounds read due to insufficient checks in XML_ParseBuffer() (bsc#1284334).
• CVE-2026-93990: fails to validate low surrogates following high surrogates in UTF-16 input (bsc#1282347).
• CVE-2026-102633: Denial of Service via integer overflow in expat_realloc (bsc#1283493).

Update to 2.8.5 (jsc#PED-16154):

• Bug fixes:
• Fix an OOM-related memory leak on a failed overflow check
• Fix memory alignment for architectures with 128bit pointers
• Mark XML_SetHashSalt deprecated
• CMake: only add /source-charset:utf-8 when /utf-8 is not present
• lib: resolve undefined behavior from overshifting a signed int
• lib: support read-only hash table lookup with non-zero-terminated keys
• lib: use a C99 bool for ENTITY.open
• version info bumped from 13:3:12 to 13:4:12
• fix support for 2+ GiB documents (regression from 2.8.2)
• reject empty version in the XML declaration
• fix printf format for AIX
• CMake|AIX: enable EXPAT_DEV_URANDOM by default
• version info bumped from 13:2:12 to 13:3:12
• Existing API function XML_SetHashSalt is now deprecated
• because of its limitations, and its use should be
• considered a vulnerability. Please either use the new API
• function XML_SetHashSalt16Bytes (with known-high-quality
• entropy input only!) instead, or leave the derivation of
• a 16-bytes hash salt from high quality entropy to Expat's
• internal machinery (by not calling either of the two
• XML_SetHashSalt* functions).
• xmlwf: Fix a memory leak
• WASI: Fix format specifiers for 32bit WASI SDK
• Fix a class of false positives where input should have been rejected with error XML_ERROR_ASYNC_ENTITY; regression from earlier security fix (of Expat 2.7.0) …

This update for expat fixes the following issues:

• CVE-2025-59375: denial of service (resource consumption) caused by processing malformed small documents (bsc#1249584).
• CVE-2026-24515: NULL dereference (CWE-476) due to function XML_ExternalEntityParserCreate() failing to copy the encoding handler data passed to XML_SetUnknownEncodingHandler() from the parent to the subparser (bsc#1257144).
• CVE-2026-25210: lack of buffer size check can lead to an integer overflow (bsc#1257496).
• CVE-2026-32776: NULL pointer dereference when processing empty external parameter entities inside an entity declaration value (bsc#1259726).
• CVE-2026-32777: denial of service due to infinite loop in DTD content parsing (bsc#1259711).
• CVE-2026-32778: NULL pointer dereference in setContext on retry after an out-of-memory condition (bsc#1259729).
• CVE-2026-41080: crafted XML document can cause a denial of service (bsc#1262263).
• CVE-2026-45186: denial of service via moderately sized crafted XML input (bsc#1264713).
• CVE-2026-50219: lack of handler call depth tracking for calls to XML_* functions from within handlers in cases of a policy violation (bsc#1267631).
• CVE-2026-56131: lack of handler call depth tracking for calls to XML_ResumeParser from within handlers in cases of a policy violation (bsc#1268572).
• CVE-2026-56132: heap-based buffer overflow in doProlog in xmlparse.c (bsc#1268573).
• CVE-2026-56403,CVE-2026-56404,CVE-2026-56405,CVE-2026-56406, CVE-2026-56407,CVE-2026-56408,CVE-2026-56409,CVE-2026-56410, CVE-2026-56411,CVE-2026-56412: multiple integer overflow vulnerabilities (bsc#1275115).
• CVE-2026-66046: denial of service vulnerability caused by quadratic algorithmic complexity in the storeAtts() function (bsc#1275732).
• CVE-2026-72522: out-of-bounds read and resultant infinite loop due to low surrogates being treated the same as high surrogates during Unicode processing (bsc#1275594).
• CVE-2026-76641: out-of-bounds read vulnerability that allows attackers to trigger memory corruption (bsc#1275915).
• CVE-2026-76956: denial of service via hash flooding attacks (bsc#1275860).
• CVE-2026-76957: lack of handler call depth tracking with custom encoding callbacks. Thus, a use- after-free can occur (bsc#1275859).
• CVE-2026-77214: out-of-bounds read due to insufficient checks in XML_ParseBuffer() (bsc#1284334).
• CVE-2026-93990: fails to validate low surrogates following high surrogates in UTF-16 input (bsc#1282347).
• CVE-2026-102633: Denial of Service via integer overflow in expat_realloc (bsc#1283493).

Update to 2.8.5 (jsc#PED-16154):

• Bug fixes:
• Fix an OOM-related memory leak on a failed overflow check
• Fix memory alignment for architectures with 128bit pointers
• Mark XML_SetHashSalt deprecated
• CMake: only add /source-charset:utf-8 when /utf-8 is not present
• lib: resolve undefined behavior from overshifting a signed int
• lib: support read-only hash table lookup with non-zero-terminated keys
• lib: use a C99 bool for ENTITY.open
• version info bumped from 13:3:12 to 13:4:12
• fix support for 2+ GiB documents (regression from 2.8.2)
• reject empty version in the XML declaration
• fix printf format for AIX
• CMake|AIX: enable EXPAT_DEV_URANDOM by default
• version info bumped from 13:2:12 to 13:3:12
• Existing API function XML_SetHashSalt is now deprecated
• because of its limitations, and its use should be
• considered a vulnerability. Please either use the new API
• function XML_SetHashSalt16Bytes (with known-high-quality
• entropy input only!) instead, or leave the derivation of
• a 16-bytes hash salt from high quality entropy to Expat's
• internal machinery (by not calling either of the two
• XML_SetHashSalt* functions).
• xmlwf: Fix a memory leak
• WASI: Fix format specifiers for 32bit WASI SDK
• Fix alignment of internal allocations for some non-amd64 architectures (e.g. sparc32); fixes up on the fix to CVE-2025-59375 (of Expat 2.7.2)
• Fix a class of…

This update for MozillaThunderbird fixes the following issues:

Update to Mozilla Thunderbird 153.5 (MFSA 2026-110, bsc#1284493):

• CVE-2026-109704: Privilege escalation in the Application Update component.
• CVE-2026-109705: Sandbox escape, site isolation issue due to incorrect boundary conditions, use-after-free in the Networking component.
• CVE-2026-109706: Use-after-free in the Storage: IndexedDB component.
• CVE-2026-109707: Sandbox escape due to use-after-free in the Networking component.
• CVE-2026-109708: Sandbox escape due to incorrect boundary conditions in the Networking component.
• CVE-2026-109709: Information disclosure, privilege escalation in the Security: Process Sandboxing component.
• CVE-2026-109710: Use-after-free in the Graphics: Text component.
• CVE-2026-109711: Use-after-free in the Graphics: Canvas2D component.
• CVE-2026-109712: Sandbox escape due to uninitialized memory in the Graphics component.
• CVE-2026-109713: Use-after-free in the Crash Reporting component.
• CVE-2026-109715: Incorrect boundary conditions in the JavaScript Engine component.
• CVE-2026-109716: Incorrect boundary conditions in the JavaScript Engine component.
• CVE-2026-109717: Use-after-free in the DOM: Bindings (WebIDL) component.
• CVE-2026-109718: Use-after-free in the XML component.
• CVE-2026-109719: Race condition, use-after-free in the Graphics: CanvasWebGL component.
• CVE-2026-109720: JIT miscompilation in the JavaScript: WebAssembly component.
• CVE-2026-109721: Incorrect boundary conditions in the JavaScript Engine: JIT component.
• CVE-2026-109722: JIT miscompilation in the JavaScript Engine: JIT component.
• CVE-2026-109723: Integer overflow in the Layout: Text and Fonts component.
• CVE-2026-109724: Use-after-free in the DOM: Core & HTML component.
• CVE-2026-109725: Use-after-free in the DOM: Core & HTML component.
• CVE-2026-109726: Use-after-free in the SVG component.
• CVE-2026-109727: Use-after-free in the Audio/Video component.
• CVE-2026-109728: Use-after-free in the DOM: Animation component.
• CVE-2026-109729: Use-after-free in the JavaScript Engine: JIT component.
• CVE-2026-109730: Integer overflow in the Graphics component.
• CVE-2026-109731: Incorrect boundary conditions in the Graphics: Canvas2D component.
• CVE-2026-109732: Use-after-free in the DOM: Streams component.
• CVE-2026-109733: JIT miscompilation in the JavaScript Engine: JIT component.
• CVE-2026-109734: Mitigation bypass in the DOM: Security component.
• CVE-2026-109736: Frame poisoning in the Layout component.
• CVE-2026-109737: Mitigation bypass in the Enterprise Policies component.
• CVE-2026-109738: Use-after-free in the Audio/Video: Playback component.
• CVE-2026-109740: Sandbox escape due to incorrect boundary conditions in the Widget: Win32 component.
• CVE-2026-109741: Use-after-free in the Storage: Bucket File System component.
• CVE-2026-109742: Information disclosure in the PDF Viewer component.
• CVE-2026-109743: Privilege escalation in the Panning and Zooming component.
• CVE-2026-109744: Other issue in the DOM: File component.
• CVE-2026-109745: Sandbox escape due to uninitialized memory in the DOM: Web Serial component.
• CVE-2026-109751: Information disclosure in the Networking component.
• CVE-2026-109752: Use-after-free in the DOM: Workers component.
• CVE-2026-109753: Incorrect boundary conditions in the Layout component.
• CVE-2026-109754: Incorrect boundary conditions in the DOM: Editor component.
• CVE-2026-109756: Privilege escalation in the DOM: Navigation component.
• CVE-2026-109757: Sandbox escape due to race condition in the Networking component.
• CVE-2026-109759: Site isolation issue in the Networking component.
• CVE-2026-109760: Mitigation bypass in the Networking: HTTP component.
• CVE-2026-109762: Incorrect boundary conditions in the SVG component.
• CVE-2026-109763: Mitigation bypass in the File Handling component.
• CVE-2026-109764: Mitigation bypass in the Enterprise Policies component. -…

This update for MozillaFirefox fixes the following issues:

Firefox Extended Support Release 153.5.0 ESR (MFSA 2026-108, bsc#1284493):

• CVE-2026-109704: Privilege escalation in the Application Update component.
• CVE-2026-109705: Sandbox escape, site isolation issue due to incorrect boundary conditions, use-after-free in the Networking component.
• CVE-2026-109706: Use-after-free in the Storage: IndexedDB component.
• CVE-2026-109707: Sandbox escape due to use-after-free in the Networking component.
• CVE-2026-109708: Sandbox escape due to incorrect boundary conditions in the Networking component.
• CVE-2026-109709: Information disclosure, privilege escalation in the Security: Process Sandboxing component.
• CVE-2026-109710: Use-after-free in the Graphics: Text component.
• CVE-2026-109711: Use-after-free in the Graphics: Canvas2D component.
• CVE-2026-109712: Sandbox escape due to uninitialized memory in the Graphics component.
• CVE-2026-109713: Use-after-free in the Crash Reporting component.
• CVE-2026-109715: Incorrect boundary conditions in the JavaScript Engine component.
• CVE-2026-109716: Incorrect boundary conditions in the JavaScript Engine component.
• CVE-2026-109717: Use-after-free in the DOM: Bindings (WebIDL) component.
• CVE-2026-109718: Use-after-free in the XML component.
• CVE-2026-109719: Race condition, use-after-free in the Graphics: CanvasWebGL component.
• CVE-2026-109720: JIT miscompilation in the JavaScript: WebAssembly component.
• CVE-2026-109721: Incorrect boundary conditions in the JavaScript Engine: JIT component.
• CVE-2026-109722: JIT miscompilation in the JavaScript Engine: JIT component.
• CVE-2026-109723: Integer overflow in the Layout: Text and Fonts component.
• CVE-2026-109724: Use-after-free in the DOM: Core & HTML component.
• CVE-2026-109725: Use-after-free in the DOM: Core & HTML component.
• CVE-2026-109726: Use-after-free in the SVG component.
• CVE-2026-109727: Use-after-free in the Audio/Video component.
• CVE-2026-109728: Use-after-free in the DOM: Animation component.
• CVE-2026-109729: Use-after-free in the JavaScript Engine: JIT component.
• CVE-2026-109730: Integer overflow in the Graphics component.
• CVE-2026-109731: Incorrect boundary conditions in the Graphics: Canvas2D component.
• CVE-2026-109732: Use-after-free in the DOM: Streams component.
• CVE-2026-109733: JIT miscompilation in the JavaScript Engine: JIT component.
• CVE-2026-109734: Mitigation bypass in the DOM: Security component.
• CVE-2026-109736: Frame poisoning in the Layout component.
• CVE-2026-109737: Mitigation bypass in the Enterprise Policies component.
• CVE-2026-109738: Use-after-free in the Audio/Video: Playback component.
• CVE-2026-109740: Sandbox escape due to incorrect boundary conditions in the Widget: Win32 component.
• CVE-2026-109741: Use-after-free in the Storage: Bucket File System component.
• CVE-2026-109742: Information disclosure in the PDF Viewer component.
• CVE-2026-109743: Privilege escalation in the Panning and Zooming component.
• CVE-2026-109744: Other issue in the DOM: File component.
• CVE-2026-109745: Sandbox escape due to uninitialized memory in the DOM: Web Serial component.
• CVE-2026-109751: Information disclosure in the Networking component.
• CVE-2026-109752: Use-after-free in the DOM: Workers component.
• CVE-2026-109753: Incorrect boundary conditions in the Layout component.
• CVE-2026-109754: Incorrect boundary conditions in the DOM: Editor component.
• CVE-2026-109756: Privilege escalation in the DOM: Navigation component.
• CVE-2026-109757: Sandbox escape due to race condition in the Networking component.
• CVE-2026-109759: Site isolation issue in the Networking component.
• CVE-2026-109760: Mitigation bypass in the Networking: HTTP component.
• CVE-2026-109762: Incorrect boundary conditions in the SVG component.
• CVE-2026-109763: Mitigation bypass in the File Handling component.
• CVE-2026-109764: Mitigation bypass in the Enterprise Policies component. -…

This update for MozillaFirefox fixes the following issues:

Firefox Extended Support Release 153.5.0 ESR (MFSA 2026-108, bsc#1284493):

• CVE-2026-109704: Privilege escalation in the Application Update component.
• CVE-2026-109705: Sandbox escape, site isolation issue due to incorrect boundary conditions, use-after-free in the Networking component.
• CVE-2026-109706: Use-after-free in the Storage: IndexedDB component.
• CVE-2026-109707: Sandbox escape due to use-after-free in the Networking component.
• CVE-2026-109708: Sandbox escape due to incorrect boundary conditions in the Networking component.
• CVE-2026-109709: Information disclosure, privilege escalation in the Security: Process Sandboxing component.
• CVE-2026-109710: Use-after-free in the Graphics: Text component.
• CVE-2026-109711: Use-after-free in the Graphics: Canvas2D component.
• CVE-2026-109712: Sandbox escape due to uninitialized memory in the Graphics component.
• CVE-2026-109713: Use-after-free in the Crash Reporting component.
• CVE-2026-109715: Incorrect boundary conditions in the JavaScript Engine component.
• CVE-2026-109716: Incorrect boundary conditions in the JavaScript Engine component.
• CVE-2026-109717: Use-after-free in the DOM: Bindings (WebIDL) component.
• CVE-2026-109718: Use-after-free in the XML component.
• CVE-2026-109719: Race condition, use-after-free in the Graphics: CanvasWebGL component.
• CVE-2026-109720: JIT miscompilation in the JavaScript: WebAssembly component.
• CVE-2026-109721: Incorrect boundary conditions in the JavaScript Engine: JIT component.
• CVE-2026-109722: JIT miscompilation in the JavaScript Engine: JIT component.
• CVE-2026-109723: Integer overflow in the Layout: Text and Fonts component.
• CVE-2026-109724: Use-after-free in the DOM: Core & HTML component.
• CVE-2026-109725: Use-after-free in the DOM: Core & HTML component.
• CVE-2026-109726: Use-after-free in the SVG component.
• CVE-2026-109727: Use-after-free in the Audio/Video component.
• CVE-2026-109728: Use-after-free in the DOM: Animation component.
• CVE-2026-109729: Use-after-free in the JavaScript Engine: JIT component.
• CVE-2026-109730: Integer overflow in the Graphics component.
• CVE-2026-109731: Incorrect boundary conditions in the Graphics: Canvas2D component.
• CVE-2026-109732: Use-after-free in the DOM: Streams component.
• CVE-2026-109733: JIT miscompilation in the JavaScript Engine: JIT component.
• CVE-2026-109734: Mitigation bypass in the DOM: Security component.
• CVE-2026-109736: Frame poisoning in the Layout component.
• CVE-2026-109737: Mitigation bypass in the Enterprise Policies component.
• CVE-2026-109738: Use-after-free in the Audio/Video: Playback component.
• CVE-2026-109740: Sandbox escape due to incorrect boundary conditions in the Widget: Win32 component.
• CVE-2026-109741: Use-after-free in the Storage: Bucket File System component.
• CVE-2026-109742: Information disclosure in the PDF Viewer component.
• CVE-2026-109743: Privilege escalation in the Panning and Zooming component.
• CVE-2026-109744: Other issue in the DOM: File component.
• CVE-2026-109745: Sandbox escape due to uninitialized memory in the DOM: Web Serial component.
• CVE-2026-109751: Information disclosure in the Networking component.
• CVE-2026-109752: Use-after-free in the DOM: Workers component.
• CVE-2026-109753: Incorrect boundary conditions in the Layout component.
• CVE-2026-109754: Incorrect boundary conditions in the DOM: Editor component.
• CVE-2026-109756: Privilege escalation in the DOM: Navigation component.
• CVE-2026-109757: Sandbox escape due to race condition in the Networking component.
• CVE-2026-109759: Site isolation issue in the Networking component.
• CVE-2026-109760: Mitigation bypass in the Networking: HTTP component.
• CVE-2026-109762: Incorrect boundary conditions in the SVG component.
• CVE-2026-109763: Mitigation bypass in the File Handling component.
• CVE-2026-109764: Mitigation bypass in the Enterprise Policies component. -…

It was discovered that Expat used insufficient entropy when generating hash salt values for its internal hash table. An attacker could use this to craft an XML document that triggers hash flooding, leading to a denial of service.

It was discovered that Expat could be made to allocate large amounts of memory when parsing a small crafted document. An attacker could possibly use this issue to cause Expat to consume resources, leading to a denial of service. This issue was only addressed in Ubuntu 24.04 LTS. (CVE-2025-59375)

It was discovered that Expat incorrectly handled empty external parameter entity content. An attacker could possibly use this issue to cause Expat to crash, resulting in a denial of service. (CVE-2026-32776)

It was discovered that Expat incorrectly handled certain DTD content. An attacker could possibly use this issue to cause Expat to enter an infinite loop, resulting in a denial of service. (CVE-2026-32777)

It was discovered that Expat incorrectly handled memory when retrying after an earlier out-of-memory condition. An attacker could possibly use this issue to cause Expat to crash, resulting in a denial of service. (CVE-2026-32778)

It was discovered that Expat performed attribute name collision checks inefficiently. An attacker could possibly use this issue to cause Expat to consume resources when processing a moderately sized crafted XML document, resulting in a denial of service. This issue was only addressed in Ubuntu 24.04 LTS and Ubuntu 26.04 LTS. (CVE-2026-45186)

It was discovered that Expat used insufficient entropy, allowing hash flooding through a crafted XML document. An attacker could possibly use this issue to cause Expat to consume resources, leading to a denial of service. This issue was only addressed in Ubuntu 14.04 LTS, Ubuntu 24.04 LTS, and Ubuntu 26.04 LTS. (CVE-2026-41080)

It was discovered that Expat did not track handler call depth for certain functions called from within handlers, leading to a use-after-free. An attacker could possibly use this issue to cause Expat to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2026-50219, CVE-2026-56412)

It was discovered that Expat incorrectly handled certain values, leading to integer overflows. An attacker could possibly use this issue to cause Expat to crash, resulting in a denial of service. (CVE-2026-56403, CVE-2026-56404, CVE-2026-56405)

It was discovered that Expat incorrectly handled certain values, leading to an integer overflow. An attacker could possibly use this issue to cause Expat to crash, resulting in a denial of service. This issue only affected Ubuntu 18.04 LTS, Ubuntu 20.04 LTS, Ubuntu 22.04 LTS, Ubuntu 24.04 LTS, and Ubuntu 26.04 LTS. (CVE-2026-56408)