Red Hat Security Advisory: nodejs:20 security update
Node.js is a software development platform for building fast and scalable network applications in the JavaScript programming language. Security Fix(es): * minimatch: minimatch: Denial of Service via specially crafted glob patterns (CVE-2026-26996) * minimatch: Minimatch: Denial of Service via catastrophic backtracking in glob expressions (CVE-2026-27904) * nghttp2: nghttp2: Denial of Service via malformed HTTP/2 frames after session termination (CVE-2026-27135) * Node.js: Node.js: Denial of Service due to crafted HTTP `__proto__` header (CVE-2026-21710) 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 advisory covers four denial of service vulnerabilities affecting Node.js 20 and related components on Red Hat Enterprise Linux 9.4. The vulnerabilities include CVE-2026-21710 (Node.js denial of service via crafted HTTP __proto__ header), CVE-2026-26996 and CVE-2026-27904 (minimatch denial of service via specially crafted glob patterns and catastrophic backtracking), and CVE-2026-27135 (nghttp2 denial of service via malformed HTTP/2 frames after session termination). Red Hat has released updated packages to address these issues in the nodejs:20 module for RHEL 9.4 Extended Update Support. The advisory references specific bugzilla entries for each CVE and provides links for applying the update.
Potential Impact
Successful exploitation of these vulnerabilities can cause denial of service conditions in affected Node.js applications or components by triggering excessive resource consumption or crashes. There is no indication of code execution or data compromise. The impact is limited to service availability degradation or interruption.
Mitigation Recommendations
Red Hat has released updated nodejs:20 packages for Red Hat Enterprise Linux 9.4 Extended Update Support that fix these vulnerabilities. Users should apply the security update as described in the Red Hat advisory RHSA-2026:9711 and the referenced article https://access.redhat.com/articles/11258. No additional mitigation steps are indicated by the vendor. Patch status is official-fix; the update resolves the issues.
Red Hat Security Advisory: nodejs:20 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): * minimatch: minimatch: Denial of Service via specially crafted glob patterns (CVE-2026-26996) * minimatch: Minimatch: Denial of Service via catastrophic backtracking in glob expressions (CVE-2026-27904) * nghttp2: nghttp2: Denial of Service via malformed HTTP/2 frames after session termination (CVE-2026-27135) * Node.js: Node.js: Denial of Service due to crafted HTTP `__proto__` header (CVE-2026-21710) 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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AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This advisory covers four denial of service vulnerabilities affecting Node.js 20 and related components on Red Hat Enterprise Linux 9.4. The vulnerabilities include CVE-2026-21710 (Node.js denial of service via crafted HTTP __proto__ header), CVE-2026-26996 and CVE-2026-27904 (minimatch denial of service via specially crafted glob patterns and catastrophic backtracking), and CVE-2026-27135 (nghttp2 denial of service via malformed HTTP/2 frames after session termination). Red Hat has released updated packages to address these issues in the nodejs:20 module for RHEL 9.4 Extended Update Support. The advisory references specific bugzilla entries for each CVE and provides links for applying the update.
Potential Impact
Successful exploitation of these vulnerabilities can cause denial of service conditions in affected Node.js applications or components by triggering excessive resource consumption or crashes. There is no indication of code execution or data compromise. The impact is limited to service availability degradation or interruption.
Mitigation Recommendations
Red Hat has released updated nodejs:20 packages for Red Hat Enterprise Linux 9.4 Extended Update Support that fix these vulnerabilities. Users should apply the security update as described in the Red Hat advisory RHSA-2026:9711 and the referenced article https://access.redhat.com/articles/11258. No additional mitigation steps are indicated by the vendor. Patch status is official-fix; the update resolves the issues.
Technical Details
- Gcve Source
- db.gcve.eu
- Csaf Category
- csaf_security_advisory
- Csaf Version
- 2.0
- Publisher
- Red Hat Product Security
- Advisory Id
- RHSA-2026:9711
- Cve Count
- 4
- Additional Cves
- ["CVE-2026-26996","CVE-2026-27135","CVE-2026-27904"]
- Cvss Version
- null
Threat ID: 6a160989e29bf47b50653351
Added to database: 05/26/2026, 20:58:49 UTC
Last enriched: 07/26/2026, 00:07:29 UTC
Last updated: 07/31/2026, 19:22:57 UTC
Views: 104
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