RHSA-2026:7675 - Security Advisory

Topic

An update for nodejs24 is now available for Red Hat Enterprise Linux 10.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

Description

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: Nodejs denial of service (CVE-2026-21637)
• brace-expansion: brace-expansion: Denial of Service via unbounded brace range expansion (CVE-2026-25547)
• minimatch: minimatch: Denial of Service via specially crafted glob patterns (CVE-2026-26996)
• undici: Undici: Denial of Service due to uncontrolled resource consumption (CVE-2026-2581)
• undici: Undici: HTTP header injection and request smuggling vulnerability (CVE-2026-1527)
• undici: undici: Denial of Service via unbounded memory consumption during WebSocket permessage-deflate decompression (CVE-2026-1526)
• undici: Undici: Denial of Service via invalid WebSocket permessage-deflate extension parameter (CVE-2026-2229)
• undici: Undici: HTTP Request Smuggling and Denial of Service due to duplicate Content-Length headers (CVE-2026-1525)
• undici: undici: Denial of Service via crafted WebSocket frame with large length (CVE-2026-1528)
• nghttp2: nghttp2: Denial of Service via malformed HTTP/2 frames after session termination (CVE-2026-27135)
• Node.js: Node.js: Denial of Service via malformed Internationalized Domain Name processing (CVE-2026-21712)
• Node.js: Node.js: Denial of Service due to crafted HTTP `__proto__` header (CVE-2026-21710)
• Node.js: Node.js: Information disclosure due to `fs.realpathSync.native()` bypassing filesystem read restrictions (CVE-2026-21715)
• nodejs: Node.js: Permission bypass allows unauthorized modification of file permissions and ownership via incomplete security fix. (CVE-2026-21716)
• Node.js: Node.js: Unauthorized inter-process communication due to missing Unix Domain Socket permission checks (CVE-2026-21711)
• Node.js: Node.js: Information disclosure via timing oracle in HMAC verification (CVE-2026-21713)
• Node.js: Node.js: Memory leak and Denial of Service via crafted HTTP/2 WINDOW_UPDATE frames (CVE-2026-21714)
• nodejs: v8: Node.js: Denial of Service via V8 string hashing mechanism due to predictable hash collisions (CVE-2026-21717)

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.

Solution

For details on how to apply this update, which includes the changes described in this advisory, refer to:

https://access.redhat.com/articles/11258

Affected Products

• Red Hat Enterprise Linux for x86_64 10 x86_64
• Red Hat Enterprise Linux for x86_64 - Extended Update Support 10.2 x86_64
• Red Hat Enterprise Linux for IBM z Systems 10 s390x
• Red Hat Enterprise Linux for IBM z Systems - Extended Update Support 10.2 s390x
• Red Hat Enterprise Linux for Power, little endian 10 ppc64le
• Red Hat Enterprise Linux for Power, little endian - Extended Update Support 10.2 ppc64le
• Red Hat Enterprise Linux for ARM 64 10 aarch64
• Red Hat Enterprise Linux for ARM 64 - Extended Update Support 10.2 aarch64
• Red Hat Enterprise Linux for ARM 64 - 4 years of updates 10.2 aarch64
• Red Hat Enterprise Linux for IBM z Systems - 4 years of updates 10.2 s390x
• Red Hat Enterprise Linux for Power, little endian - 4 years of support 10.2 ppc64le
• Red Hat Enterprise Linux for x86_64 - 4 years of updates 10.2 x86_64
• Red Hat Enterprise Linux for x86_64 - Extended Life Cycle 10.2 x86_64
• Red Hat Enterprise Linux for ARM 64 - Extended Life Cycle 10.2 aarch64
• Red Hat Enterprise Linux for Power, little endian - Extended Life Cycle 10.2 ppc64le
• Red Hat Enterprise Linux for IBM z Systems - Extended Life Cycle 10.2 s390x

Fixes

• BZ - 2431340 - CVE-2026-21637 nodejs: Nodejs denial of service
• BZ - 2436942 - CVE-2026-25547 brace-expansion: brace-expansion: Denial of Service via unbounded brace range expansion
• BZ - 2441268 - CVE-2026-26996 minimatch: minimatch: Denial of Service via specially crafted glob patterns
• BZ - 2447140 - CVE-2026-2581 undici: Undici: Denial of Service due to uncontrolled resource consumption
• BZ - 2447141 - CVE-2026-1527 undici: Undici: HTTP header injection and request smuggling vulnerability
• BZ - 2447142 - CVE-2026-1526 undici: undici: Denial of Service via unbounded memory consumption during WebSocket permessage-deflate decompression
• BZ - 2447143 - CVE-2026-2229 undici: Undici: Denial of Service via invalid WebSocket permessage-deflate extension parameter
• BZ - 2447144 - CVE-2026-1525 undici: Undici: HTTP Request Smuggling and Denial of Service due to duplicate Content-Length headers
• BZ - 2447145 - CVE-2026-1528 undici: undici: Denial of Service via crafted WebSocket frame with large length
• BZ - 2448754 - CVE-2026-27135 nghttp2: nghttp2: Denial of Service via malformed HTTP/2 frames after session termination
• BZ - 2453037 - CVE-2026-21712 Node.js: Node.js: Denial of Service via malformed Internationalized Domain Name processing
• BZ - 2453151 - CVE-2026-21710 Node.js: Node.js: Denial of Service due to crafted HTTP `__proto__` header
• BZ - 2453152 - CVE-2026-21715 Node.js: Node.js: Information disclosure due to `fs.realpathSync.native()` bypassing filesystem read restrictions
• BZ - 2453157 - CVE-2026-21716 nodejs: Node.js: Permission bypass allows unauthorized modification of file permissions and ownership via incomplete security fix.
• BZ - 2453158 - CVE-2026-21711 Node.js: Node.js: Unauthorized inter-process communication due to missing Unix Domain Socket permission checks
• BZ - 2453160 - CVE-2026-21713 Node.js: Node.js: Information disclosure via timing oracle in HMAC verification
• BZ - 2453161 - CVE-2026-21714 Node.js: Node.js: Memory leak and Denial of Service via crafted HTTP/2 WINDOW_UPDATE frames
• BZ - 2453162 - CVE-2026-21717 nodejs: v8: Node.js: Denial of Service via V8 string hashing mechanism due to predictable hash collisions

CVEs

• CVE-2026-1525
• CVE-2026-1526
• CVE-2026-1527
• CVE-2026-1528
• CVE-2026-2229
• CVE-2026-2581
• CVE-2026-21637
• CVE-2026-21710
• CVE-2026-21711
• CVE-2026-21712
• CVE-2026-21713
• CVE-2026-21714
• CVE-2026-21715
• CVE-2026-21716
• CVE-2026-21717
• CVE-2026-25547
• CVE-2026-26996
• CVE-2026-27135

References

• https://access.redhat.com/security/updates/classification/#important