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
This Red Hat security advisory (RHSA-2026:7350) addresses 18 vulnerabilities in the Node.js 24 module and associated components on Red Hat Enterprise Linux 9. The vulnerabilities include multiple denial of service flaws (e.g., CVE-2026-21637, CVE-2026-1526, CVE-2026-21714), HTTP request smuggling and header injection (CVE-2026-1527, CVE-2026-1525), information disclosure via timing oracle and filesystem bypass (CVE-2026-21713, CVE-2026-21715), permission bypass allowing unauthorized modification of file permissions (CVE-2026-21716), and unauthorized inter-process communication due to missing Unix Domain Socket permission checks (CVE-2026-21711). The advisory provides fixes for these issues in the nodejs:24 module for Red Hat Enterprise Linux 9 across multiple architectures. The vulnerabilities stem from issues in Node.js core, the Undici HTTP client library, and other dependencies such as brace-expansion and minimatch. The update is classified as important and addresses both denial of service and security bypass risks.
Potential Impact
The vulnerabilities collectively could lead to denial of service conditions through resource exhaustion or malformed input, unauthorized modification of file permissions and ownership, information disclosure through timing attacks and filesystem access bypass, HTTP request smuggling and header injection that could affect HTTP communication integrity, and unauthorized inter-process communication due to missing permission checks. These impacts can affect the confidentiality, integrity, and availability of systems running the affected Node.js module on Red Hat Enterprise Linux 9.
Mitigation Recommendations
An updated nodejs:24 module package is available from Red Hat that addresses these vulnerabilities. Users should apply the security update as detailed in Red Hat advisory RHSA-2026:7350 and the referenced article https://access.redhat.com/articles/11258 to remediate these issues. No additional mitigations are specified beyond applying the official 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
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Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This Red Hat security advisory (RHSA-2026:7350) addresses 18 vulnerabilities in the Node.js 24 module and associated components on Red Hat Enterprise Linux 9. The vulnerabilities include multiple denial of service flaws (e.g., CVE-2026-21637, CVE-2026-1526, CVE-2026-21714), HTTP request smuggling and header injection (CVE-2026-1527, CVE-2026-1525), information disclosure via timing oracle and filesystem bypass (CVE-2026-21713, CVE-2026-21715), permission bypass allowing unauthorized modification of file permissions (CVE-2026-21716), and unauthorized inter-process communication due to missing Unix Domain Socket permission checks (CVE-2026-21711). The advisory provides fixes for these issues in the nodejs:24 module for Red Hat Enterprise Linux 9 across multiple architectures. The vulnerabilities stem from issues in Node.js core, the Undici HTTP client library, and other dependencies such as brace-expansion and minimatch. The update is classified as important and addresses both denial of service and security bypass risks.
Potential Impact
The vulnerabilities collectively could lead to denial of service conditions through resource exhaustion or malformed input, unauthorized modification of file permissions and ownership, information disclosure through timing attacks and filesystem access bypass, HTTP request smuggling and header injection that could affect HTTP communication integrity, and unauthorized inter-process communication due to missing permission checks. These impacts can affect the confidentiality, integrity, and availability of systems running the affected Node.js module on Red Hat Enterprise Linux 9.
Mitigation Recommendations
An updated nodejs:24 module package is available from Red Hat that addresses these vulnerabilities. Users should apply the security update as detailed in Red Hat advisory RHSA-2026:7350 and the referenced article https://access.redhat.com/articles/11258 to remediate these issues. No additional mitigations are specified beyond applying the official 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"]
- Cvss Version
- null
Threat ID: 6a160985e29bf47b50651944
Added to database: 05/26/2026, 20:58:45 UTC
Last enriched: 07/15/2026, 14:09:28 UTC
Last updated: 07/25/2026, 20:52:03 UTC
Views: 193
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