Red Hat Security Advisory: nodejs:24 security update
Node.js is a software development platform for building fast and scalable network applications in the JavaScript programming language. Security Fix(es): * nodejs: Nodejs denial of service (CVE-2026-21637) * 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.
AI Analysis
Technical Summary
The advisory covers a set of 17 security vulnerabilities affecting Node.js 24 module on Red Hat Enterprise Linux 8. These include denial of service vulnerabilities in Node.js core (e.g., malformed Internationalized Domain Name processing, HTTP/2 WINDOW_UPDATE frames, V8 string hashing collisions), undici HTTP client (e.g., HTTP header injection, request smuggling, unbounded memory consumption during WebSocket decompression), minimatch library (glob pattern DoS), and nghttp2 HTTP/2 library (malformed frames DoS). Additional issues include information disclosure via timing oracle in HMAC verification, permission bypass allowing unauthorized modification of file permissions, unauthorized inter-process communication due to missing Unix Domain Socket permission checks, and information disclosure via filesystem read restriction bypass. The advisory references fixes rebasing Node.js to the latest 24.x release and updates related components to mitigate these vulnerabilities.
Potential Impact
The vulnerabilities collectively can lead to denial of service conditions, information disclosure, unauthorized permission changes, and unauthorized inter-process communication on affected systems running the vulnerable Node.js 24 module. Exploitation could disrupt application availability, expose sensitive information, or allow unauthorized modification of file permissions and ownership. The advisory rates the overall impact as Important (high severity).
Mitigation Recommendations
Red Hat has released an updated nodejs:24 module for Red Hat Enterprise Linux 8 that rebases Node.js to the latest 24.x release, addressing all listed vulnerabilities. Users should apply this update promptly to remediate the security issues. For detailed update instructions, refer to the Red Hat advisory at https://access.redhat.com/articles/11258. No additional mitigations beyond applying the official update are indicated.
Red Hat Security Advisory: nodejs:24 security update
Description
Node.js is a software development platform for building fast and scalable network applications in the JavaScript programming language. Security Fix(es): * nodejs: Nodejs denial of service (CVE-2026-21637) * 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.
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The advisory covers a set of 17 security vulnerabilities affecting Node.js 24 module on Red Hat Enterprise Linux 8. These include denial of service vulnerabilities in Node.js core (e.g., malformed Internationalized Domain Name processing, HTTP/2 WINDOW_UPDATE frames, V8 string hashing collisions), undici HTTP client (e.g., HTTP header injection, request smuggling, unbounded memory consumption during WebSocket decompression), minimatch library (glob pattern DoS), and nghttp2 HTTP/2 library (malformed frames DoS). Additional issues include information disclosure via timing oracle in HMAC verification, permission bypass allowing unauthorized modification of file permissions, unauthorized inter-process communication due to missing Unix Domain Socket permission checks, and information disclosure via filesystem read restriction bypass. The advisory references fixes rebasing Node.js to the latest 24.x release and updates related components to mitigate these vulnerabilities.
Potential Impact
The vulnerabilities collectively can lead to denial of service conditions, information disclosure, unauthorized permission changes, and unauthorized inter-process communication on affected systems running the vulnerable Node.js 24 module. Exploitation could disrupt application availability, expose sensitive information, or allow unauthorized modification of file permissions and ownership. The advisory rates the overall impact as Important (high severity).
Mitigation Recommendations
Red Hat has released an updated nodejs:24 module for Red Hat Enterprise Linux 8 that rebases Node.js to the latest 24.x release, addressing all listed vulnerabilities. Users should apply this update promptly to remediate the security issues. For detailed update instructions, refer to the Red Hat advisory at https://access.redhat.com/articles/11258. No additional mitigations beyond applying the official update are indicated.
Technical Details
- Gcve Source
- db.gcve.eu
- Csaf Category
- csaf_security_advisory
- Csaf Version
- 2.0
- Publisher
- Red Hat Product Security
- Advisory Id
- RHSA-2026:7670
- Cve Count
- 17
- Additional Cves
- ["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-2026-26996","CVE-2026-27135"]
Threat ID: 6a160984e29bf47b50650e62
Added to database: 05/26/2026, 20:58:44 UTC
Last enriched: 08/10/2026, 20:26:56 UTC
Last updated: 09/14/2026, 00:46:52 UTC
Views: 144
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.