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) * 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.
AI Analysis
Technical Summary
Red Hat issued a security advisory (RHSA-2026:7350) for the nodejs:24 module in Red Hat Enterprise Linux 9, addressing 18 CVEs affecting Node.js and related libraries. The vulnerabilities include denial of service via malformed inputs and resource exhaustion (e.g., CVE-2026-21637, CVE-2026-2581, CVE-2026-1526), HTTP header injection and request smuggling (CVE-2026-1527, CVE-2026-1525), information disclosure through filesystem bypass and timing oracle attacks (CVE-2026-21715, CVE-2026-21713), permission bypass allowing unauthorized file permission changes (CVE-2026-21716), and unauthorized inter-process communication due to missing permission checks (CVE-2026-21711). The advisory provides a comprehensive update to mitigate these issues in Red Hat Enterprise Linux 9 variants.
Potential Impact
The vulnerabilities collectively allow attackers to cause denial of service conditions, perform HTTP request smuggling, inject HTTP headers, disclose sensitive information, bypass permission restrictions, and communicate unauthorizedly between processes. These impacts can degrade service availability, compromise data confidentiality, and allow unauthorized privilege modifications on affected systems running Node.js 24 module on Red Hat Enterprise Linux 9.
Mitigation Recommendations
Red Hat has released an official security update for the nodejs:24 module in Red Hat Enterprise Linux 9 that addresses all listed vulnerabilities. Users should apply the update as described in the Red Hat advisory (https://access.redhat.com/articles/11258) to remediate these issues. Since this is an official fix, applying the update fully mitigates the vulnerabilities. No additional mitigation steps are required beyond applying the vendor-provided update.
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) * 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.
Affected software
Run on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
Red Hat issued a security advisory (RHSA-2026:7350) for the nodejs:24 module in Red Hat Enterprise Linux 9, addressing 18 CVEs affecting Node.js and related libraries. The vulnerabilities include denial of service via malformed inputs and resource exhaustion (e.g., CVE-2026-21637, CVE-2026-2581, CVE-2026-1526), HTTP header injection and request smuggling (CVE-2026-1527, CVE-2026-1525), information disclosure through filesystem bypass and timing oracle attacks (CVE-2026-21715, CVE-2026-21713), permission bypass allowing unauthorized file permission changes (CVE-2026-21716), and unauthorized inter-process communication due to missing permission checks (CVE-2026-21711). The advisory provides a comprehensive update to mitigate these issues in Red Hat Enterprise Linux 9 variants.
Potential Impact
The vulnerabilities collectively allow attackers to cause denial of service conditions, perform HTTP request smuggling, inject HTTP headers, disclose sensitive information, bypass permission restrictions, and communicate unauthorizedly between processes. These impacts can degrade service availability, compromise data confidentiality, and allow unauthorized privilege modifications on affected systems running Node.js 24 module on Red Hat Enterprise Linux 9.
Mitigation Recommendations
Red Hat has released an official security update for the nodejs:24 module in Red Hat Enterprise Linux 9 that addresses all listed vulnerabilities. Users should apply the update as described in the Red Hat advisory (https://access.redhat.com/articles/11258) to remediate these issues. Since this is an official fix, applying the update fully mitigates the vulnerabilities. No additional mitigation steps are required beyond applying the vendor-provided update.
Technical Details
- Gcve Source
- db.gcve.eu
- Csaf Category
- csaf_security_advisory
- Csaf Version
- 2.0
- Publisher
- Red Hat Product Security
- Advisory Id
- RHSA-2026:7350
- Cve Count
- 18
- 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-2026-25547","CVE-2026-26996","CVE-2026-27135"]
Threat ID: 6a160985e29bf47b50651944
Added to database: 05/26/2026, 20:58:45 UTC
Last enriched: 08/10/2026, 20:29:48 UTC
Last updated: 09/10/2026, 19:36:52 UTC
Views: 253
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.