CVE-2026-56848

A flaw in Node.js HTTP/2 handling allows nghttp2_session_mem_send() to be called re-entrantly while nghttp2_session_mem_recv() is executing, resulting in a heap-use-after-free. This vulnerability affects Node.js 26.x, 24.x, and 22.x.

Node.js is a platform built on Chrome's JavaScript runtime \ for easily building fast, scalable network applications. \ Node.js uses an event-driven, non-blocking I/O model that \ makes it lightweight and efficient, perfect for data-intensive \ real-time applications that run across distributed devices.

Security Fix(es):

• nodejs: Node.js: Unauthorized filesystem access due to Permission Model enforcement flaw (CVE-2026-58043)

• nodejs: Node.js: Remote memory exhaustion via HTTP/2 retained header blocks (CVE-2026-56846)

• nodejs: Node.js: Heap-use-after-free in HTTP/2 handling can lead to denial of service (CVE-2026-56848)

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.

Node.js is a platform built on Chrome's JavaScript runtime for easily building fast, scalable network applications. Node.js uses an event-driven, non-blocking I/O model that makes it lightweight and efficient, perfect for data-intensive real-time applications that run across distributed devices.

Security Fix(es):

• nodejs: Node.js: Unauthorized filesystem access due to Permission Model enforcement flaw (CVE-2026-58043)

• nodejs: Node.js: Remote memory exhaustion via HTTP/2 retained header blocks (CVE-2026-56846)

• nodejs: Node.js: Heap-use-after-free in HTTP/2 handling can lead to denial of service (CVE-2026-56848)

Bug Fix(es) and Enhancement(s):

• nodejs24: Rebase to the latest Node.js 24 release [rhel-10.2.z] (JIRA:Rocky Linux-220543)

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.

Node.js is a software development platform for building fast and scalable network applications in the JavaScript programming language.

Security Fix(es):

• nodejs: Node.js: Unauthorized filesystem access due to Permission Model enforcement flaw (CVE-2026-58043)

• nodejs: Node.js: Remote memory exhaustion via HTTP/2 retained header blocks (CVE-2026-56846)

• nodejs: Node.js: Heap-use-after-free in HTTP/2 handling can lead to denial of service (CVE-2026-56848)

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.

Node.js is a software development platform for building fast and scalable network applications in the JavaScript programming language.

Security Fix(es):

• nodejs: Node.js: Unauthorized filesystem access due to Permission Model enforcement flaw (CVE-2026-58043)

• nodejs: Node.js: Remote memory exhaustion via HTTP/2 retained header blocks (CVE-2026-56846)

• nodejs: Node.js: Heap-use-after-free in HTTP/2 handling can lead to denial of service (CVE-2026-56848)

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.

Node.js is a software development platform for building fast and scalable network applications in the JavaScript programming language.

Security Fix(es):

• nodejs: Node.js: Unauthorized filesystem access due to Permission Model enforcement flaw (CVE-2026-58043)

• nodejs: Node.js: Remote memory exhaustion via HTTP/2 retained header blocks (CVE-2026-56846)

• nodejs: Node.js: Heap-use-after-free in HTTP/2 handling can lead to denial of service (CVE-2026-56848)

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.

Node.js is a software development platform for building fast and scalable network applications in the JavaScript programming language.

Security Fix(es):

• nodejs: Node.js: Unauthorized filesystem access due to Permission Model enforcement flaw (CVE-2026-58043)

• nodejs: Node.js: Remote memory exhaustion via HTTP/2 retained header blocks (CVE-2026-56846)

• nodejs: Node.js: Heap-use-after-free in HTTP/2 handling can lead to denial of service (CVE-2026-56848)

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 in Node.js HTTP/2 handling allows nghttp2_session_mem_send() to be called re-entrantly while nghttp2_session_mem_recv() is executing, resulting in a heap-use-after-free. This vulnerability affects Node.js 26.x, 24.x, and 22.x.

Node.js is a platform built on Chrome's JavaScript runtime \ for easily building fast, scalable network applications. \ Node.js uses an event-driven, non-blocking I/O model that \ makes it lightweight and efficient, perfect for data-intensive \ real-time applications that run across distributed devices.

Security Fix(es):

• nodejs: Node.js: Unauthorized filesystem access due to Permission Model enforcement flaw (CVE-2026-58043)
• nodejs: Node.js: Remote memory exhaustion via HTTP/2 retained header blocks (CVE-2026-56846)
• nodejs: Node.js: Heap-use-after-free in HTTP/2 handling can lead to denial of service (CVE-2026-56848)

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.

Node.js is a platform built on Chrome's JavaScript runtime for easily building fast, scalable network applications. Node.js uses an event-driven, non-blocking I/O model that makes it lightweight and efficient, perfect for data-intensive real-time applications that run across distributed devices.

Security Fix(es):

• nodejs: Node.js: Unauthorized filesystem access due to Permission Model enforcement flaw (CVE-2026-58043)
• nodejs: Node.js: Remote memory exhaustion via HTTP/2 retained header blocks (CVE-2026-56846)
• nodejs: Node.js: Heap-use-after-free in HTTP/2 handling can lead to denial of service (CVE-2026-56848)

Bug Fix(es) and Enhancement(s):

• nodejs24: Rebase to the latest Node.js 24 release [almalinux-10.2.z] (JIRA:AlmaLinux-220543)

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.

Node.js is a software development platform for building fast and scalable network applications in the JavaScript programming language.

Security Fix(es):

• nodejs: Node.js: Unauthorized filesystem access due to Permission Model enforcement flaw (CVE-2026-58043)
• nodejs: Node.js: Remote memory exhaustion via HTTP/2 retained header blocks (CVE-2026-56846)
• nodejs: Node.js: Heap-use-after-free in HTTP/2 handling can lead to denial of service (CVE-2026-56848)

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.

Node.js is a software development platform for building fast and scalable network applications in the JavaScript programming language.

Security Fix(es):

• nodejs: Node.js: Unauthorized filesystem access due to Permission Model enforcement flaw (CVE-2026-58043)
• nodejs: Node.js: Remote memory exhaustion via HTTP/2 retained header blocks (CVE-2026-56846)
• nodejs: Node.js: Heap-use-after-free in HTTP/2 handling can lead to denial of service (CVE-2026-56848)

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.

Node.js is a software development platform for building fast and scalable network applications in the JavaScript programming language.

Security Fix(es):

• nodejs: Node.js: Unauthorized filesystem access due to Permission Model enforcement flaw (CVE-2026-58043)
• nodejs: Node.js: Remote memory exhaustion via HTTP/2 retained header blocks (CVE-2026-56846)
• nodejs: Node.js: Heap-use-after-free in HTTP/2 handling can lead to denial of service (CVE-2026-56848)

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.

Node.js is a software development platform for building fast and scalable network applications in the JavaScript programming language.

Security Fix(es):

• nodejs: Node.js: Unauthorized filesystem access due to Permission Model enforcement flaw (CVE-2026-58043)
• nodejs: Node.js: Remote memory exhaustion via HTTP/2 retained header blocks (CVE-2026-56846)
• nodejs: Node.js: Heap-use-after-free in HTTP/2 handling can lead to denial of service (CVE-2026-56848)

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 in Node.js HTTP/2 handling allows nghttp2_session_mem_send() to be called re-entrantly while nghttp2_session_mem_recv() is executing, resulting in a heap-use-after-free.

This vulnerability affects Node.js 26.x, 24.x, and 22.x.

A flaw in Node.js HTTP/2 handling allows nghttp2_session_mem_send() to be called re-entrantly while nghttp2_session_mem_recv() is executing, resulting in a heap-use-after-free.

This vulnerability affects Node.js 26.x, 24.x, and 22.x.

• CVE-2026-56846: retain HTTP/2 header-block memory in session accounting for the stream's lifetime instead of releasing it once headers reach JS, preventing a maxSessionMemory accounting bypass via stalled headers
• CVE-2026-56848: defer RST_STREAM submission while nghttp2 is still dispatching receive callbacks, preventing a re-entrant session send that could crash the process

• CVE-2026-56846: retain HTTP/2 header-block memory in session accounting for the stream's lifetime instead of releasing it once headers reach JS, preventing a maxSessionMemory accounting bypass via stalled headers
• CVE-2026-56848: defer RST_STREAM submission while nghttp2 is still dispatching receive callbacks, preventing a re-entrant session send that could crash the process

http2: retain header memory in session accounting. (CVE-2026-56846) http2: defer rst stream while in scope. (CVE-2026-56848) permission: avoid granting radix split nodes. (CVE-2026-58043) https: distinguish PFX object-array agent keys. (CVE-2026-56850) https: bind identity checks to session reuse. (CVE-2026-58040) dns: handle large resolveAny address replies. (CVE-2026-58042) zlib: throw on out-of-bounds write buffers. (CVE-2026-58045) permission: enforce fs write permission for trace events. (CVE-2026-56847) permission: check final report output path. (CVE-2026-58039) http: reject requests exceeding max header count. (CVE-2026-58044)

These are all security issues fixed in the corepack24-24.18.1-1.1 package on the GA media of openSUSE Tumbleweed.

These are all security issues fixed in the nodejs26-26.5.1-1.1 package on the GA media of openSUSE Tumbleweed.

This update for nodejs22 fixes the following issues:

Update to 22.23.2.

• CVE-2026-54272: ip-address: misclassification of IPv4-mapped/NAT64 IPv6 addresses allows for bypass of SSRF and trust- boundary checks (bsc#1272882).
• CVE-2026-56846: HTTP/2 retained headers can bypass maxSessionMemory limits (bsc#1272941).
• CVE-2026-56847: permission model allows trace events to write outside the allowlist (bsc#1272949).
• CVE-2026-56848: HTTP/2 re-entrant send can cause heap-use-after-free (bsc#1272942).
• CVE-2026-56850: HTTPS agent can reuse mTLS identities across PFX certificates (bsc#1272944).
• CVE-2026-58039: permission model allows process reports to write outside the allowlist (bsc#1272950).
• CVE-2026-58040: HTTPS agent session reuse can skip hostname verification (bsc#1272945).
• CVE-2026-58042: dns.resolveAny() can abort on DNS responses with many A records (bsc#1272947).
• CVE-2026-58043: permission model path matching can over-grant filesystem access (bsc#1272943).
• CVE-2026-58044: HTTP parser header truncation can enable request smuggling (bsc#1272951).
• CVE-2026-58045: node:zlib sync APIs can crash on spoofed TypedArray length (bsc#1272948).

This update for nodejs24 fixes the following issues:

Update to 24.18.1.

• CVE-2026-54272: ip-address: misclassification of IPv4-mapped/NAT64 IPv6 addresses allows for bypass of SSRF and trust- boundary checks (bsc#1272882).
• CVE-2026-56846: HTTP/2 retained headers can bypass maxSessionMemory limits (bsc#1272941).
• CVE-2026-56847: permission model allows trace events to write outside the allowlist (bsc#1272949).
• CVE-2026-56848: HTTP/2 re-entrant send can cause heap-use-after-free (bsc#1272942).
• CVE-2026-56850: HTTPS agent can reuse mTLS identities across PFX certificates (bsc#1272944).
• CVE-2026-58039: permission model allows process reports to write outside the allowlist (bsc#1272950).
• CVE-2026-58040: HTTPS agent session reuse can skip hostname verification (bsc#1272945).
• CVE-2026-58042: dns.resolveAny() can abort on DNS responses with many A records (bsc#1272947).
• CVE-2026-58043: permission model path matching can over-grant filesystem access (bsc#1272943).
• CVE-2026-58044: HTTP parser header truncation can enable request smuggling (bsc#1272951).
• CVE-2026-58045: node:zlib sync APIs can crash on spoofed TypedArray length (bsc#1272948).

This update for nodejs22 fixes the following issues:

Update to 22.23.2.

• CVE-2026-54272: ip-address: misclassification of IPv4-mapped/NAT64 IPv6 addresses allows for bypass of SSRF and trust- boundary checks (bsc#1272882).
• CVE-2026-56846: HTTP/2 retained headers can bypass maxSessionMemory limits (bsc#1272941).
• CVE-2026-56847: permission model allows trace events to write outside the allowlist (bsc#1272949).
• CVE-2026-56848: HTTP/2 re-entrant send can cause heap-use-after-free (bsc#1272942).
• CVE-2026-56850: HTTPS agent can reuse mTLS identities across PFX certificates (bsc#1272944).
• CVE-2026-58039: permission model allows process reports to write outside the allowlist (bsc#1272950).
• CVE-2026-58040: HTTPS agent session reuse can skip hostname verification (bsc#1272945).
• CVE-2026-58042: dns.resolveAny() can abort on DNS responses with many A records (bsc#1272947).
• CVE-2026-58043: permission model path matching can over-grant filesystem access (bsc#1272943).
• CVE-2026-58044: HTTP parser header truncation can enable request smuggling (bsc#1272951).
• CVE-2026-58045: node:zlib sync APIs can crash on spoofed TypedArray length (bsc#1272948).

This update for nodejs24 fixes the following issues:

Update to 24.18.1.

• CVE-2026-54272: ip-address: misclassification of IPv4-mapped/NAT64 IPv6 addresses allows for bypass of SSRF and trust- boundary checks (bsc#1272882).
• CVE-2026-56846: HTTP/2 retained headers can bypass maxSessionMemory limits (bsc#1272941).
• CVE-2026-56847: permission model allows trace events to write outside the allowlist (bsc#1272949).
• CVE-2026-56848: HTTP/2 re-entrant send can cause heap-use-after-free (bsc#1272942).
• CVE-2026-56850: HTTPS agent can reuse mTLS identities across PFX certificates (bsc#1272944).
• CVE-2026-58039: permission model allows process reports to write outside the allowlist (bsc#1272950).
• CVE-2026-58040: HTTPS agent session reuse can skip hostname verification (bsc#1272945).
• CVE-2026-58042: dns.resolveAny() can abort on DNS responses with many A records (bsc#1272947).
• CVE-2026-58043: permission model path matching can over-grant filesystem access (bsc#1272943).
• CVE-2026-58044: HTTP parser header truncation can enable request smuggling (bsc#1272951).
• CVE-2026-58045: node:zlib sync APIs can crash on spoofed TypedArray length (bsc#1272948).

This update for nodejs22 fixes the following issues:

Update to 22.23.2.

• CVE-2026-54272: ip-address: misclassification of IPv4-mapped/NAT64 IPv6 addresses allows for bypass of SSRF and trust- boundary checks (bsc#1272882).
• CVE-2026-56846: HTTP/2 retained headers can bypass maxSessionMemory limits (bsc#1272941).
• CVE-2026-56847: permission model allows trace events to write outside the allowlist (bsc#1272949).
• CVE-2026-56848: HTTP/2 re-entrant send can cause heap-use-after-free (bsc#1272942).
• CVE-2026-56850: HTTPS agent can reuse mTLS identities across PFX certificates (bsc#1272944).
• CVE-2026-58039: permission model allows process reports to write outside the allowlist (bsc#1272950).
• CVE-2026-58040: HTTPS agent session reuse can skip hostname verification (bsc#1272945).
• CVE-2026-58042: dns.resolveAny() can abort on DNS responses with many A records (bsc#1272947).
• CVE-2026-58043: permission model path matching can over-grant filesystem access (bsc#1272943).
• CVE-2026-58044: HTTP parser header truncation can enable request smuggling (bsc#1272951).
• CVE-2026-58045: node:zlib sync APIs can crash on spoofed TypedArray length (bsc#1272948).

This update for nodejs24 fixes the following issues:

Update to 24.18.1.

• CVE-2026-54272: ip-address: misclassification of IPv4-mapped/NAT64 IPv6 addresses allows for bypass of SSRF and trust- boundary checks (bsc#1272882).
• CVE-2026-56846: HTTP/2 retained headers can bypass maxSessionMemory limits (bsc#1272941).
• CVE-2026-56847: permission model allows trace events to write outside the allowlist (bsc#1272949).
• CVE-2026-56848: HTTP/2 re-entrant send can cause heap-use-after-free (bsc#1272942).
• CVE-2026-56850: HTTPS agent can reuse mTLS identities across PFX certificates (bsc#1272944).
• CVE-2026-58039: permission model allows process reports to write outside the allowlist (bsc#1272950).
• CVE-2026-58040: HTTPS agent session reuse can skip hostname verification (bsc#1272945).
• CVE-2026-58042: dns.resolveAny() can abort on DNS responses with many A records (bsc#1272947).
• CVE-2026-58043: permission model path matching can over-grant filesystem access (bsc#1272943).
• CVE-2026-58044: HTTP parser header truncation can enable request smuggling (bsc#1272951).
• CVE-2026-58045: node:zlib sync APIs can crash on spoofed TypedArray length (bsc#1272948).

This update for nodejs24 fixes the following issues:

Update to 24.18.1.

• CVE-2026-54272: ip-address: misclassification of IPv4-mapped/NAT64 IPv6 addresses allows for bypass of SSRF and trust- boundary checks (bsc#1272882).
• CVE-2026-56846: HTTP/2 retained headers can bypass maxSessionMemory limits (bsc#1272941).
• CVE-2026-56847: permission model allows trace events to write outside the allowlist (bsc#1272949).
• CVE-2026-56848: HTTP/2 re-entrant send can cause heap use-after-free (bsc#1272942).
• CVE-2026-56850: HTTPS agent can reuse mTLS identities across PFX certificates (bsc#1272944).
• CVE-2026-58039: permission model allows process reports to write outside the allowlist (bsc#1272950).
• CVE-2026-58040: HTTPS agent session reuse can skip hostname verification (bsc#1272945).
• CVE-2026-58041: node:sqlite SQLTagStore iterator replay can re-execute writes (bsc#1272946).
• CVE-2026-58042: dns.resolveAny() can abort on DNS responses with many A records (bsc#1272947).
• CVE-2026-58043: permission model path matching can over-grant filesystem access (bsc#1272943).
• CVE-2026-58044: HTTP parser header truncation can enable request smuggling (bsc#1272951).
• CVE-2026-58045: node:zlib sync APIs can crash on spoofed TypedArray length (bsc#1272948).

Other updates and bugfixes:

• Version 24.18.0:
  • fix: severe regression in security update 24.17 of nodejs24 (bsc#1269825)
  • doc: update blockList stability status to release candidate
  • fs: support caller-supplied readFile() buffers
  • http: close pre-request sockets in closeIdleConnections
  • loader: implement package maps
  • net: support TCP_KEEPINTVL and TCP_KEEPCNT in setKeepAlive
  • tls: add certificateCompression option
  • vfs: dispatch node:fs/promises to mounted VFS instances
  • vfs: add minimal node:vfs subsystem

This update for nodejs22 fixes the following issues:

Update to 22.23.2.

• CVE-2026-54272: ip-address: misclassification of IPv4-mapped/NAT64 IPv6 addresses allows for bypass of SSRF and trust- boundary checks (bsc#1272882).
• CVE-2026-56846: HTTP/2 retained headers can bypass maxSessionMemory limits (bsc#1272941).
• CVE-2026-56847: permission model allows trace events to write outside the allowlist (bsc#1272949).
• CVE-2026-56848: HTTP/2 re-entrant send can cause heap-use-after-free (bsc#1272942).
• CVE-2026-56850: HTTPS agent can reuse mTLS identities across PFX certificates (bsc#1272944).
• CVE-2026-58039: permission model allows process reports to write outside the allowlist (bsc#1272950).
• CVE-2026-58040: HTTPS agent session reuse can skip hostname verification (bsc#1272945).
• CVE-2026-58042: dns.resolveAny() can abort on DNS responses with many A records (bsc#1272947).
• CVE-2026-58043: permission model path matching can over-grant filesystem access (bsc#1272943).
• CVE-2026-58044: HTTP parser header truncation can enable request smuggling (bsc#1272951).
• CVE-2026-58045: node:zlib sync APIs can crash on spoofed TypedArray length (bsc#1272948).

This update for nodejs22 fixes the following issues:

Update to 22.23.2.

• CVE-2026-54272: ip-address: misclassification of IPv4-mapped/NAT64 IPv6 addresses allows for bypass of SSRF and trust- boundary checks (bsc#1272882).
• CVE-2026-56846: HTTP/2 retained headers can bypass maxSessionMemory limits (bsc#1272941).
• CVE-2026-56847: permission model allows trace events to write outside the allowlist (bsc#1272949).
• CVE-2026-56848: HTTP/2 re-entrant send can cause heap-use-after-free (bsc#1272942).
• CVE-2026-56850: HTTPS agent can reuse mTLS identities across PFX certificates (bsc#1272944).
• CVE-2026-58039: permission model allows process reports to write outside the allowlist (bsc#1272950).
• CVE-2026-58040: HTTPS agent session reuse can skip hostname verification (bsc#1272945).
• CVE-2026-58042: dns.resolveAny() can abort on DNS responses with many A records (bsc#1272947).
• CVE-2026-58043: permission model path matching can over-grant filesystem access (bsc#1272943).
• CVE-2026-58044: HTTP parser header truncation can enable request smuggling (bsc#1272951).
• CVE-2026-58045: node:zlib sync APIs can crash on spoofed TypedArray length (bsc#1272948).

This update for nodejs20 fixes the following issues:

• CVE-2025-22150: undici: predictable random values used when defining the boundary for a multipart/form-data request (bsc#1236258).
• CVE-2026-6733: undici: response queue poisoning on reused keep-alive sockets can lead to incorrect response delivery (bsc#1268479).
• CVE-2026-9496: pacote: excessive CPU consumption in addGitSha when processing a specially crafted spec.rawSpec value can lead to DoS (bsc#1266318).
• CVE-2026-9679: undici: HTTP header injection via Set-Cookie percent-decoding (bsc#1268477).
• CVE-2026-11525: undici: weakening of cookie SameSite policy due to incorrect parsing of Set-Cookie header (bsc#1268481).
• CVE-2026-12151: undici: denial of service due to unbounded memory growth via WebSocket frames (bsc#1268482).
• CVE-2026-16728: undici: downstream response desynchronization via retry interceptor (bsc#1273593).
• CVE-2026-16729: undici: setCookie function does not fully sanitize cookie attributes (bsc#1273591).
• CVE-2026-22036: undici: unbounded decompression chain in HTTP responses via Content-Encoding may lead to resource exhaustion (bsc#1256848).
• CVE-2026-27135: nghttp2: assertion failure due to missing state validation can lead to DoS (bsc#1259853).
• CVE-2026-40170: ngtcp2: qlog parameters_set stack buffer overflow (bsc#1262274).
• CVE-2026-42338: ip-address: cross-site scripting via improper HTML escaping of untrusted input (bsc#1268097).
• CVE-2026-48615: proxy credentials leaked in ERR_PROXY_TUNNEL error message (bsc#1268598).
• CVE-2026-48617: permission model enforcement bypass via process.report.writeReport() path misvalidation (bsc#1268554).
• CVE-2026-48618: unicode dot separator handling can lead to tls wildcard-depth authentication bypass due to resolver and verifier hostname normalization mismatch (bsc#1268593).
• CVE-2026-48619: unbounded memory growth in node:http2 clients via attacker-controlled ORIGIN frames (bsc#1268618).
• CVE-2026-48928: uppercase sni context matching can lead to mtls authorization bypass due to case-sensitive hostname matching (bsc#1268605).
• CVE-2026-48930: embedded-nul hostnames can lead to silent authority rebinding due to c-string truncation in resolver bindings (bsc#1268606).
• CVE-2026-48931: HTTP response queue poisoning via TOCTOU race condition in http.Agent (bsc#1268611).
• CVE-2026-48933: WebCrypto AES integer overflow leads to remote process abort (bsc#1268592).
• CVE-2026-48934: TLS host identity verification bypass via session reuse with different servername leads to unauthorized connections (bsc#1268608).
• CVE-2026-48935: permission model bypass via FileHandle.utimes() in the promises API (bsc#1268609).
• CVE-2026-48937: servers keep accepting data even after sending a GOAWAY frame (bsc#1268555).
• CVE-2026-54272: ip-address: misclassification of IPv4-mapped/NAT64 IPv6 addresses allows for bypass of SSRF and trust- boundary checks (bsc#1272882).
• CVE-2026-56846: HTTP/2 retained headers can bypass maxSessionMemory limits (bsc#1272941).
• CVE-2026-56847: permission model allows trace events to write outside the allowlist (bsc#1272949).
• CVE-2026-56848: HTTP/2 re-entrant send can cause heap use-after-free (bsc#1272942).
• CVE-2026-56850: HTTPS agent can reuse mTLS identities across PFX certificates (bsc#1272944).
• CVE-2026-58039: permission model allows process reports to write outside the allowlist (bsc#1272950).
• CVE-2026-58040: HTTPS agent session reuse can skip hostname verification (bsc#1272945).
• CVE-2026-58042: dns.resolveAny() can abort on DNS responses with many A records (bsc#1272947).
• CVE-2026-58043: permission model path matching can over-grant filesystem access (bsc#1272943).
• CVE-2026-58044: HTTP parser header truncation can enable request smuggling (bsc#1272951).
• CVE-2026-58045: node:zlib sync APIs can crash on spoofed TypedArray length (bsc#1272948).
• CVE-2026-69192: ip-address: Address4…

This update for nodejs20 fixes the following issues:

• CVE-2025-22150: undici: predictable random values used when defining the boundary for a multipart/form-data request (bsc#1236258).
• CVE-2026-6733: undici: response queue poisoning on reused keep-alive sockets can lead to incorrect response delivery (bsc#1268479).
• CVE-2026-9496: pacote: excessive CPU consumption in addGitSha when processing a specially crafted spec.rawSpec value can lead to DoS (bsc#1266318).
• CVE-2026-9679: undici: HTTP header injection via Set-Cookie percent-decoding (bsc#1268477).
• CVE-2026-11525: undici: weakening of cookie SameSite policy due to incorrect parsing of Set-Cookie header (bsc#1268481).
• CVE-2026-12151: undici: denial of service due to unbounded memory growth via WebSocket frames (bsc#1268482).
• CVE-2026-16728: undici: downstream response desynchronization via retry interceptor (bsc#1273593).
• CVE-2026-16729: undici: setCookie function does not fully sanitize cookie attributes (bsc#1273591).
• CVE-2026-22036: undici: unbounded decompression chain in HTTP responses via Content-Encoding may lead to resource exhaustion (bsc#1256848).
• CVE-2026-27135: nghttp2: assertion failure due to missing state validation can lead to DoS (bsc#1259853).
• CVE-2026-40170: ngtcp2: qlog parameters_set stack buffer overflow (bsc#1262274).
• CVE-2026-42338: ip-address: cross-site scripting via improper HTML escaping of untrusted input (bsc#1268097).
• CVE-2026-48615: proxy credentials leaked in ERR_PROXY_TUNNEL error message (bsc#1268598).
• CVE-2026-48617: permission model enforcement bypass via process.report.writeReport() path misvalidation (bsc#1268554).
• CVE-2026-48618: unicode dot separator handling can lead to tls wildcard-depth authentication bypass due to resolver and verifier hostname normalization mismatch (bsc#1268593).
• CVE-2026-48619: unbounded memory growth in node:http2 clients via attacker-controlled ORIGIN frames (bsc#1268618).
• CVE-2026-48928: uppercase sni context matching can lead to mtls authorization bypass due to case-sensitive hostname matching (bsc#1268605).
• CVE-2026-48930: embedded-nul hostnames can lead to silent authority rebinding due to c-string truncation in resolver bindings (bsc#1268606).
• CVE-2026-48931: HTTP response queue poisoning via TOCTOU race condition in http.Agent (bsc#1268611).
• CVE-2026-48933: WebCrypto AES integer overflow leads to remote process abort (bsc#1268592).
• CVE-2026-48934: TLS host identity verification bypass via session reuse with different servername leads to unauthorized connections (bsc#1268608).
• CVE-2026-48935: permission model bypass via FileHandle.utimes() in the promises API (bsc#1268609).
• CVE-2026-48937: servers keep accepting data even after sending a GOAWAY frame (bsc#1268555).
• CVE-2026-54272: ip-address: misclassification of IPv4-mapped/NAT64 IPv6 addresses allows for bypass of SSRF and trust- boundary checks (bsc#1272882).
• CVE-2026-56846: HTTP/2 retained headers can bypass maxSessionMemory limits (bsc#1272941).
• CVE-2026-56847: permission model allows trace events to write outside the allowlist (bsc#1272949).
• CVE-2026-56848: HTTP/2 re-entrant send can cause heap use-after-free (bsc#1272942).
• CVE-2026-56850: HTTPS agent can reuse mTLS identities across PFX certificates (bsc#1272944).
• CVE-2026-58039: permission model allows process reports to write outside the allowlist (bsc#1272950).
• CVE-2026-58040: HTTPS agent session reuse can skip hostname verification (bsc#1272945).
• CVE-2026-58042: dns.resolveAny() can abort on DNS responses with many A records (bsc#1272947).
• CVE-2026-58043: permission model path matching can over-grant filesystem access (bsc#1272943).
• CVE-2026-58044: HTTP parser header truncation can enable request smuggling (bsc#1272951).
• CVE-2026-58045: node:zlib sync APIs can crash on spoofed TypedArray length (bsc#1272948).
• CVE-2026-69192: ip-address: Address4…

This update for nodejs18 fixes the following issues:

• CVE-2025-22150: undici: insufficiently random values used when defining the boundary for a multipart/form-data request (bsc#1236258).
• CVE-2025-23166: improper error handling in async cryptographic operations crashes process (bsc#1243218).
• CVE-2025-23167: llhttp: improper HTTP header block termination in llhttp (bsc#1243220).
• CVE-2025-55131: timeout-based race conditions allow for allocations that contain leftover data from previous operations and lead to exposure of in-process secrets (bsc#1256570).
• CVE-2025-59465: malformed HTTP/2 HEADERS frame with invalid HPACK data can cause a crash due to an unhandled error (bsc#1256573).
• CVE-2025-59466: uncatchable 'Maximum call stack size exceeded' error when async_hooks.createHook() is enabled can lead to crash (bsc#1256574).
• CVE-2025-62408: c-ares 1.32.3-1.34.5 use after free() (bsc#1254738).
• CVE-2026-6733: undici: Undici: Response queue poisoning on reused keep-alive sockets can lead to incorrect response delivery (bsc#1268479).
• CVE-2026-9679: undici: undici vulnerable to HTTP header injection via Set-Cookie percent-decoding (bsc#1268477).
• CVE-2026-11525: undici: undici: Weakening of cookie SameSite policy due to incorrect parsing of Set-Cookie header (bsc#1268481).
• CVE-2026-12151: undici: undici: Denial of Service due to unbounded memory growth via WebSocket frames (bsc#1268482).
• CVE-2026-15157: No validation of the type property of a duck-typed blob-like request body before using it as the Content-Type header on the HTTP/1.1 dispatcher (bsc#1272958).
• CVE-2026-16728: undici: downstream response desynchronization via retry interceptor (bsc#1273593).
• CVE-2026-16729: undici: undici's setCookie function does not fully sanitize cookie attributes (bsc#1273591).
• CVE-2026-21637: synchronous exceptions thrown during certain callbacks bypass the standard TLS error handling paths and can cause a denial of service (bsc#1256576).
• CVE-2026-21710: uncaught TypeError exception can cause a denial of service (bsc#1260455).
• CVE-2026-21713: timing side-channel in HMAC verification via memcmp can lead to potential MAC forgery (bsc#1260463).
• CVE-2026-21714: WINDOW_UPDATE frames on stream 0 can lead to memory leak (bsc#1260480).
• CVE-2026-21717: crafted request can lead to hash collisions trivially predictable (bsc#1260494).
• CVE-2026-22036: undici: unbounded decompression chain in HTTP responses via Content-Encoding may lead to resource exhaustion (bsc#1256848).
• CVE-2026-27135: nghttp2: assertion failure due to missing state validation can lead to DoS (bsc#1259853).
• CVE-2026-48618: Node.js unicode dot separator handling can lead to tls wildcard-depth authentication bypass due to resolver and verifier hostname normalization mismatch (bsc#1268593).
• CVE-2026-48619: Unbounded memory growth in node:http2 clients via attacker-controlled ORIGIN frames (bsc#1268618).
• CVE-2026-48928: Uppercase sni context matching can lead to mtls authorization bypass due to case-sensitive hostname matching (bsc#1268605).
• CVE-2026-48930: Embedded-nul hostnames can lead to silent authority rebinding due to c-string truncation in resolver bindings (bsc#1268606).
• CVE-2026-48931: HTTP Response Queue Poisoning via TOCTOU Race Condition in http.Agent (bsc#1268611).
• CVE-2026-48933: Node.js WebCrypto AES Integer Overflow Leads to Remote Process Abort (bsc#1268592).
• CVE-2026-48934: TLS host identity verification bypass via session reuse with different servername leads to unauthorized connections (bsc#1268608).
• CVE-2026-48935: Permission Model bypass via FileHandle.utimes() in the promises API (bsc#1268609).
• CVE-2026-48937: servers keep accepting data even after sending a GOAWAY frame (bsc#1268555).
• CVE-2026-56846: HTTP/2 retained headers can bypass maxSessionMemory limits (bsc#1272941).
• CVE-2026-56848: HTTP/2 re-entrant send can cause heap-use-after-free (bsc#1272942).
• CVE-2026-56850: HTTPS…

This update for nodejs18 fixes the following issues:

• CVE-2025-22150: undici: insufficiently random values used when defining the boundary for a multipart/form-data request (bsc#1236258).
• CVE-2025-23166: improper error handling in async cryptographic operations crashes process (bsc#1243218).
• CVE-2025-23167: llhttp: improper HTTP header block termination in llhttp (bsc#1243220).
• CVE-2025-55131: timeout-based race conditions allow for allocations that contain leftover data from previous operations and lead to exposure of in-process secrets (bsc#1256570).
• CVE-2025-59465: malformed HTTP/2 HEADERS frame with invalid HPACK data can cause a crash due to an unhandled error (bsc#1256573).
• CVE-2025-59466: uncatchable 'Maximum call stack size exceeded' error when async_hooks.createHook() is enabled can lead to crash (bsc#1256574).
• CVE-2025-62408: c-ares 1.32.3-1.34.5 use after free() (bsc#1254738).
• CVE-2026-6733: undici: Undici: Response queue poisoning on reused keep-alive sockets can lead to incorrect response delivery (bsc#1268479).
• CVE-2026-9679: undici: undici vulnerable to HTTP header injection via Set-Cookie percent-decoding (bsc#1268477).
• CVE-2026-11525: undici: undici: Weakening of cookie SameSite policy due to incorrect parsing of Set-Cookie header (bsc#1268481).
• CVE-2026-12151: undici: undici: Denial of Service due to unbounded memory growth via WebSocket frames (bsc#1268482).
• CVE-2026-15157: No validation of the type property of a duck-typed blob-like request body before using it as the Content-Type header on the HTTP/1.1 dispatcher (bsc#1272958).
• CVE-2026-16728: undici: downstream response desynchronization via retry interceptor (bsc#1273593).
• CVE-2026-16729: undici: undici's setCookie function does not fully sanitize cookie attributes (bsc#1273591).
• CVE-2026-21637: synchronous exceptions thrown during certain callbacks bypass the standard TLS error handling paths and can cause a denial of service (bsc#1256576).
• CVE-2026-21710: uncaught TypeError exception can cause a denial of service (bsc#1260455).
• CVE-2026-21713: timing side-channel in HMAC verification via memcmp can lead to potential MAC forgery (bsc#1260463).
• CVE-2026-21714: WINDOW_UPDATE frames on stream 0 can lead to memory leak (bsc#1260480).
• CVE-2026-21717: crafted request can lead to hash collisions trivially predictable (bsc#1260494).
• CVE-2026-22036: undici: unbounded decompression chain in HTTP responses via Content-Encoding may lead to resource exhaustion (bsc#1256848).
• CVE-2026-27135: nghttp2: assertion failure due to missing state validation can lead to DoS (bsc#1259853).
• CVE-2026-48618: Node.js unicode dot separator handling can lead to tls wildcard-depth authentication bypass due to resolver and verifier hostname normalization mismatch (bsc#1268593).
• CVE-2026-48619: Unbounded memory growth in node:http2 clients via attacker-controlled ORIGIN frames (bsc#1268618).
• CVE-2026-48928: Uppercase sni context matching can lead to mtls authorization bypass due to case-sensitive hostname matching (bsc#1268605).
• CVE-2026-48930: Embedded-nul hostnames can lead to silent authority rebinding due to c-string truncation in resolver bindings (bsc#1268606).
• CVE-2026-48931: HTTP Response Queue Poisoning via TOCTOU Race Condition in http.Agent (bsc#1268611).
• CVE-2026-48933: Node.js WebCrypto AES Integer Overflow Leads to Remote Process Abort (bsc#1268592).
• CVE-2026-48934: TLS host identity verification bypass via session reuse with different servername leads to unauthorized connections (bsc#1268608).
• CVE-2026-48935: Permission Model bypass via FileHandle.utimes() in the promises API (bsc#1268609).
• CVE-2026-48937: servers keep accepting data even after sending a GOAWAY frame (bsc#1268555).
• CVE-2026-56846: HTTP/2 retained headers can bypass maxSessionMemory limits (bsc#1272941).
• CVE-2026-56848: HTTP/2 re-entrant send can cause heap-use-after-free (bsc#1272942).
• CVE-2026-56850: HTTPS…

This update for nodejs16 fixes the following issues:

• CVE-2025-23085: memory leak when remote peer abruptly closes socket without sending GOAWAY notification (bsc#1236250).
• CVE-2025-23166: improper error handling in async cryptographic operations crashes process (bsc#1243218).
• CVE-2025-23167: llhttp: improper HTTP header block termination in llhttp (bsc#1243220).
• CVE-2025-55131: timeout-based race conditions allow for allocations that contain leftover data from previous operations and lead to exposure of in-process secrets (bsc#1256570).
• CVE-2025-59465: malformed HTTP/2 HEADERS frame with invalid HPACK data can cause a crash due to an unhandled error (bsc#1256573).
• CVE-2025-59466: uncatchable 'Maximum call stack size exceeded' error when async_hooks.createHook() is enabled can lead to crash (bsc#1256574).
• CVE-2026-6733: undici: Undici: Response queue poisoning on reused keep-alive sockets can lead to incorrect response delivery (bsc#1268479).
• CVE-2026-11525: undici: undici: Weakening of cookie SameSite policy due to incorrect parsing of Set-Cookie header (bsc#1268481).
• CVE-2026-12151: undici: undici: Denial of Service due to unbounded memory growth via WebSocket frames (bsc#1268482).
• CVE-2026-15157: No validation of the type property of a duck-typed blob-like request body before using it as the Content-Type header on the HTTP/1.1 dispatcher (bsc#1272958).
• CVE-2026-21637: synchronous exceptions thrown during certain callbacks bypass the standard TLS error handling paths and can cause a denial of service (bsc#1256576).
• CVE-2026-21710: uncaught TypeError exception can cause a denial of service (bsc#1260455).
• CVE-2026-21713: timing side-channel in HMAC verification via memcmp can lead to potential MAC forgery (bsc#1260463).
• CVE-2026-21714: WINDOW_UPDATE frames on stream 0 can lead to memory leak (bsc#1260480).
• CVE-2026-22036: undici: unbounded decompression chain in HTTP responses via Content-Encoding may lead to resource exhaustion (bsc#1256848).
• CVE-2026-27135: nghttp2: assertion failure due to missing state validation can lead to DoS (bsc#1259853).
• CVE-2026-48618: Node.js unicode dot separator handling can lead to tls wildcard-depth authentication bypass due to resolver and verifier hostname normalization mismatch (bsc#1268593).
• CVE-2026-48619: Unbounded memory growth in node:http2 clients via attacker-controlled ORIGIN frames (bsc#1268618).
• CVE-2026-48928: Uppercase sni context matching can lead to mtls authorization bypass due to case-sensitive hostname matching (bsc#1268605).
• CVE-2026-48930: Embedded-nul hostnames can lead to silent authority rebinding due to c-string truncation in resolver bindings (bsc#1268606).
• CVE-2026-48931: HTTP Response Queue Poisoning via TOCTOU Race Condition in http.Agent (bsc#1268611).
• CVE-2026-48933: Node.js WebCrypto AES Integer Overflow Leads to Remote Process Abort (bsc#1268592).
• CVE-2026-48934: TLS host identity verification bypass via session reuse with different servername leads to unauthorized connections (bsc#1268608).
• CVE-2026-48937: servers keep accepting data even after sending a GOAWAY frame (bsc#1268555).
• CVE-2026-56846: HTTP/2 retained headers can bypass maxSessionMemory limits (bsc#1272941).
• CVE-2026-56848: HTTP/2 re-entrant send can cause heap-use-after-free (bsc#1272942).
• CVE-2026-56850: HTTPS Agent can reuse mTLS identities across PFX certificates (bsc#1272944).
• CVE-2026-58040: HTTPS Agent session reuse can skip hostname verification (bsc#1272945).
• CVE-2026-58042: dns.resolveAny() can abort on DNS responses with many A records (bsc#1272947).
• CVE-2026-58044: HTTP parser header truncation can enable request smuggling (bsc#1272951).
• CVE-2026-58045: node:zlib sync APIs can crash on spoofed TypedArray length (bsc#1272948).