CVE-2026-96889

Librsvg uses libxml2, a C library, to parse XML. When librsvg parses an SVG document which has a nested Xinclude, an XML entity declaration with a duplicate name as an existing one can cause a use-after-free error.

While libxml2 is expanding an internal entity, a recursive XInclude can parse another document that declares an entity with the same name. Both parses use the same XmlState entity map on the librsvg side. entity_insert() replaces the first entry, whose Drop implementation calls xmlFreeNode(). The outer xmlCtxtParseEntity() then keeps using the freed 144-byte xmlEntity.

The included parse should not free an entity that the outer parser is still using.

The fix is in commit 8a1b0cd319e9af2d1e9cf878081dd77f227a0504, where librsvg will no longer free xmlEntity pointers that libxml2 is still using.

An SVG library based on cairo.

Security Fix(es):

A flaw was found in librsvg. When processing an SVG document containing nested XML inclusions (Xincludes) with duplicate entity declarations, a use-after-free error can occur. This vulnerability arises because the library incorrectly frees an XML entity that is still in use by the parser. An attacker could potentially exploit this to cause a denial of service or execute arbitrary code.(CVE-2026-96889)

An SVG library based on cairo.

Security Fix(es):

A flaw was found in librsvg. When processing an SVG document containing nested XML inclusions (Xincludes) with duplicate entity declarations, a use-after-free error can occur. This vulnerability arises because the library incorrectly frees an XML entity that is still in use by the parser. An attacker could potentially exploit this to cause a denial of service or execute arbitrary code.(CVE-2026-96889)

An SVG library based on cairo.

Security Fix(es):

A flaw was found in librsvg. When processing an SVG document containing nested XML inclusions (Xincludes) with duplicate entity declarations, a use-after-free error can occur. This vulnerability arises because the library incorrectly frees an XML entity that is still in use by the parser. An attacker could potentially exploit this to cause a denial of service or execute arbitrary code.(CVE-2026-96889)

An SVG library based on cairo.

Security Fix(es):

A flaw was found in librsvg. When processing an SVG document containing nested XML inclusions (Xincludes) with duplicate entity declarations, a use-after-free error can occur. This vulnerability arises because the library incorrectly frees an XML entity that is still in use by the parser. An attacker could potentially exploit this to cause a denial of service or execute arbitrary code.(CVE-2026-96889)

Sandboxed and extendable image decoding.

Security Fix(es):

• librsvg: Use-after-free when XML includes have duplicated entities (CVE-2026-96889,RUSTSEC-2026-0305)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

The librsvg2 packages provide a Scalable Vector Graphics (SVG) library based on the libart library.

Security Fix(es):

• librsvg: Use-after-free when XML includes have duplicated entities (CVE-2026-96889,RUSTSEC-2026-0305)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

The librsvg2 packages provide a Scalable Vector Graphics (SVG) library based on the libart library.

Security Fix(es):

• librsvg: Use-after-free when XML includes have duplicated entities (CVE-2026-96889,RUSTSEC-2026-0305)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

The librsvg2 packages provide a Scalable Vector Graphics (SVG) library based on the libart library.

Security Fix(es):

• librsvg: Use-after-free when XML includes have duplicated entities (CVE-2026-96889,RUSTSEC-2026-0305)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

A flaw was found in librsvg. When processing an SVG document containing nested XML inclusions (Xincludes) with duplicate entity declarations, a use-after-free error can occur. This vulnerability arises because the library incorrectly frees an XML entity that is still in use by the parser. An attacker could potentially exploit this to cause a denial of service or execute arbitrary code.

Sandboxed and extendable image decoding.

Security Fix(es):

• librsvg: Use-after-free when XML includes have duplicated entities (CVE-2026-96889,RUSTSEC-2026-0305)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

The librsvg2 packages provide a Scalable Vector Graphics (SVG) library based on the libart library.

Security Fix(es):

• librsvg: Use-after-free when XML includes have duplicated entities (CVE-2026-96889,RUSTSEC-2026-0305)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

The librsvg2 packages provide a Scalable Vector Graphics (SVG) library based on the libart library.

Security Fix(es):

• librsvg: Use-after-free when XML includes have duplicated entities (CVE-2026-96889,RUSTSEC-2026-0305)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

The librsvg2 packages provide a Scalable Vector Graphics (SVG) library based on the libart library.

Security Fix(es):

• librsvg: Use-after-free when XML includes have duplicated entities (CVE-2026-96889,RUSTSEC-2026-0305)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

A flaw was found in librsvg. When processing an SVG document containing nested XML inclusions (Xincludes) with duplicate entity declarations, a use-after-free error can occur. This vulnerability arises because the library incorrectly frees an XML entity that is still in use by the parser. An attacker could potentially exploit this to cause a denial of service or execute arbitrary code.

These are all security issues fixed in the librsvg-2-2-2.63.4-1.1 package on the GA media of openSUSE Tumbleweed.

This update for librsvg fixes the following issues:

• CVE-2026-96889: use-after-free when XML includes have duplicated entities (bsc#1282612).

Changes for librsvg:

• Update to version 2.60.3:
• Dependency updates: lopdf for RUSTSEC-2026-0187, crossbeam-epoch for RUSTSEC-2026-0204, time for RUSTSEC-2026-0009.
• The minimum supported Rust version (MSRV) is 1.89.0.

Root has patched CVE-2026-96889 in the librsvg package for Root:Debian:12. Multiple fixed versions available.

Root has patched CVE-2026-96889 in the librsvg package for Root:Debian:13. Multiple fixed versions available.

Librsvg uses libxml2, a C library, to parse XML. When librsvg parses an SVG document which has a nested Xinclude, an XML entity declaration with a duplicate name as an existing one can cause a use-after-free error.

While libxml2 is expanding an internal entity, a recursive XInclude can parse another document that declares an entity with the same name. Both parses use the same XmlState entity map on the librsvg side. entity_insert() replaces the first entry, whose Drop implementation calls xmlFreeNode(). The outer xmlCtxtParseEntity() then keeps using the freed 144-byte xmlEntity.

The included parse should not free an entity that the outer parser is still using.

The fix is in commit 8a1b0cd319e9af2d1e9cf878081dd77f227a0504, where librsvg will no longer free xmlEntity pointers that libxml2 is still using.

This update for librsvg fixes the following issues:

• CVE-2026-96889: use-after-free when XML includes have duplicated entities (bsc#1282612).

Changes for librsvg:

• Update to version 2.60.3:
• Dependency updates: lopdf for RUSTSEC-2026-0187, crossbeam-epoch for RUSTSEC-2026-0204, time for RUSTSEC-2026-0009.
• The minimum supported Rust version (MSRV) is 1.89.0.

This update for librsvg fixes the following issues:

• CVE-2026-96889: use-after-free when XML includes have duplicated entities (bsc#1282612).

Changes for librsvg:

• Update to version 2.60.3:
• Dependency updates: lopdf for RUSTSEC-2026-0187, crossbeam-epoch for RUSTSEC-2026-0204, time for RUSTSEC-2026-0009.
• The minimum supported Rust version (MSRV) is 1.89.0.

This update for librsvg fixes the following issue:

• CVE-2026-96889: Use-after-free when XML includes have duplicated entities (bsc#1282612).

Changes for librsvg:

• Update to version 2.56.6:

• This is a security release for bug #1241, RUSTSEC-2026-0305 / CVE-2026-96889 / bsc#1282612:

• glgo#GNOME/librsvg#1241: Fix use-after-free when there are duplicate XML entities in nested Xinclude documents. Thanks to Rafael B. Dias for reporting this in detail.
• Dependency updates: lopdf for RUSTSEC-2026-0187, crossbeam-epoch for RUSTSEC-2026-0204, time for RUSTSEC-2026-0009.
• The minimum supported Rust version (MSRV) is 1.89.0.

It was discovered that librsvg incorrectly handled duplicate XML entity declarations while processing SVG documents containing nested XML inclusions. An attacker could possibly use this issue to cause a denial of service or execute arbitrary code.