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 8. CVE-2026-21710 describes a denial of service caused by a crafted HTTP __proto__ header in Node.js. CVE-2026-26996 and CVE-2026-27904 involve denial of service via specially crafted glob patterns and catastrophic backtracking in the minimatch library. CVE-2026-27135 concerns denial of service via malformed HTTP/2 frames after session termination in nghttp2. Red Hat has released updated Node.js 20 packages for RHEL 8 to address these issues as detailed in advisory RHSA-2026:8339.
Potential Impact
Successful exploitation of these vulnerabilities could cause denial of service conditions in affected Node.js applications or components, potentially disrupting service availability. The issues affect Node.js 20 and related libraries on Red Hat Enterprise Linux 8. No known exploits in the wild have been reported at this time.
Mitigation Recommendations
Red Hat has released updated Node.js 20 packages for Red Hat Enterprise Linux 8 that address these vulnerabilities. Users should apply the security update as described in Red Hat advisory RHSA-2026:8339 and the referenced update article (https://access.redhat.com/articles/11258) to remediate these issues. No additional mitigation steps are indicated by the vendor.
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 8. CVE-2026-21710 describes a denial of service caused by a crafted HTTP __proto__ header in Node.js. CVE-2026-26996 and CVE-2026-27904 involve denial of service via specially crafted glob patterns and catastrophic backtracking in the minimatch library. CVE-2026-27135 concerns denial of service via malformed HTTP/2 frames after session termination in nghttp2. Red Hat has released updated Node.js 20 packages for RHEL 8 to address these issues as detailed in advisory RHSA-2026:8339.
Potential Impact
Successful exploitation of these vulnerabilities could cause denial of service conditions in affected Node.js applications or components, potentially disrupting service availability. The issues affect Node.js 20 and related libraries on Red Hat Enterprise Linux 8. No known exploits in the wild have been reported at this time.
Mitigation Recommendations
Red Hat has released updated Node.js 20 packages for Red Hat Enterprise Linux 8 that address these vulnerabilities. Users should apply the security update as described in Red Hat advisory RHSA-2026:8339 and the referenced update article (https://access.redhat.com/articles/11258) to remediate these issues. No additional mitigation steps are indicated by the vendor.
Technical Details
- Gcve Source
- db.gcve.eu
- Csaf Category
- csaf_security_advisory
- Csaf Version
- 2.0
- Publisher
- Red Hat Product Security
- Advisory Id
- RHSA-2026:8339
- Cve Count
- 4
- Additional Cves
- ["CVE-2026-26996","CVE-2026-27135","CVE-2026-27904"]
- State
- PUBLISHED
Threat ID: 6a160989e29bf47b5065335a
Added to database: 05/26/2026, 20:58:49 UTC
Last enriched: 08/10/2026, 20:27:54 UTC
Last updated: 09/13/2026, 00:47:07 UTC
Views: 169
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