Red Hat Security Advisory: nodejs:24 security, bug fix, and enhancement update
Node.js is a software development platform for building fast and scalable network applications in the JavaScript programming language. Security Fix(es): * ip-address: ip-address: Cross-site scripting via improper HTML escaping of untrusted input (CVE-2026-42338) * undici: undici: Denial of Service due to unbounded memory growth via WebSocket frames (CVE-2026-12151) * undici: Undici: Information disclosure due to improper cache-control header parsing (CVE-2026-9678) * undici: Undici: Response queue poisoning on reused keep-alive sockets can lead to incorrect response delivery. (CVE-2026-6733) * undici: undici: Weakening of cookie SameSite policy due to incorrect parsing of Set-Cookie header (CVE-2026-11525) * undici: undici: Man-in-the-Middle attack via ignored TLS options with SOCKS5 proxy (CVE-2026-9697) * undici: undici: Information disclosure and data integrity issues due to incorrect Socks5ProxyAgent connection routing (CVE-2026-6734) * nodejs: Node.js: Denial of Service via unlimited HTTP/2 ORIGIN frames (CVE-2026-48619) * nodejs: Node.js: Silent authority rebinding due to embedded-nul hostnames in TLS handling (CVE-2026-48930) * nodejs: Node.js: Unauthorized file metadata modification (CVE-2026-48935) * nodejs: Node.js WebCrypto: Denial of Service via large input to subtle.encrypt() (CVE-2026-48933) * nodejs: Node.js: Certification validation bypass in TLS host verification (CVE-2026-48934) * Node.js: Node.js: Trust-policy bypass due to hostname matching inconsistency (CVE-2026-48928) * nodejs: Node.js: Information disclosure of proxy credentials via proxy tunnel error handling (CVE-2026-48615) * nodejs: Node.js: Authentication bypass due to TLS hostname handling and unicode dot separator mismatch (CVE-2026-48618) Bug Fix(es) and Enhancement(s): * nodejs:24/nodejs: Rebase to the latest Node.js 24 release [rhel-9.8.z] (JIRA:RHEL-186580) 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 15 distinct CVEs affecting Node.js 24 and related components. These include cross-site scripting via improper HTML escaping (CVE-2026-42338), denial of service through unbounded memory growth in WebSocket frames (CVE-2026-12151), information disclosure due to cache-control header parsing errors (CVE-2026-9678), response queue poisoning on reused keep-alive sockets (CVE-2026-6733), weakening of cookie SameSite policy (CVE-2026-11525), man-in-the-middle attacks via ignored TLS options with SOCKS5 proxy (CVE-2026-9697), and multiple TLS-related authentication and trust policy bypasses (e.g., CVE-2026-48934, CVE-2026-48618). The update rebases Node.js 24 to the latest upstream release to address these issues. The affected versions are Node.js 24 releases from 24.0.0 up to but not including 24.18.0 on Red Hat Enterprise Linux 9.
Potential Impact
The vulnerabilities collectively impact the confidentiality, integrity, and availability of Node.js applications running on affected Red Hat Enterprise Linux 9 systems. They enable potential cross-site scripting attacks, denial of service conditions, information disclosure of sensitive data including proxy credentials, authentication bypasses, and man-in-the-middle attacks. These issues can lead to incorrect response delivery, unauthorized file metadata modification, and weakening of security policies such as cookie SameSite enforcement. The severity is rated as high by Red Hat Product Security.
Mitigation Recommendations
A security update for the nodejs:24 module is available for Red Hat Enterprise Linux 9 that addresses all listed vulnerabilities by rebasing to the latest Node.js 24 release. Users should apply this update promptly following Red Hat's official guidance at https://access.redhat.com/articles/11258. No additional mitigation steps are indicated beyond applying the official patch.
Red Hat Security Advisory: nodejs:24 security, bug fix, and enhancement update
Description
Node.js is a software development platform for building fast and scalable network applications in the JavaScript programming language. Security Fix(es): * ip-address: ip-address: Cross-site scripting via improper HTML escaping of untrusted input (CVE-2026-42338) * undici: undici: Denial of Service due to unbounded memory growth via WebSocket frames (CVE-2026-12151) * undici: Undici: Information disclosure due to improper cache-control header parsing (CVE-2026-9678) * undici: Undici: Response queue poisoning on reused keep-alive sockets can lead to incorrect response delivery. (CVE-2026-6733) * undici: undici: Weakening of cookie SameSite policy due to incorrect parsing of Set-Cookie header (CVE-2026-11525) * undici: undici: Man-in-the-Middle attack via ignored TLS options with SOCKS5 proxy (CVE-2026-9697) * undici: undici: Information disclosure and data integrity issues due to incorrect Socks5ProxyAgent connection routing (CVE-2026-6734) * nodejs: Node.js: Denial of Service via unlimited HTTP/2 ORIGIN frames (CVE-2026-48619) * nodejs: Node.js: Silent authority rebinding due to embedded-nul hostnames in TLS handling (CVE-2026-48930) * nodejs: Node.js: Unauthorized file metadata modification (CVE-2026-48935) * nodejs: Node.js WebCrypto: Denial of Service via large input to subtle.encrypt() (CVE-2026-48933) * nodejs: Node.js: Certification validation bypass in TLS host verification (CVE-2026-48934) * Node.js: Node.js: Trust-policy bypass due to hostname matching inconsistency (CVE-2026-48928) * nodejs: Node.js: Information disclosure of proxy credentials via proxy tunnel error handling (CVE-2026-48615) * nodejs: Node.js: Authentication bypass due to TLS hostname handling and unicode dot separator mismatch (CVE-2026-48618) Bug Fix(es) and Enhancement(s): * nodejs:24/nodejs: Rebase to the latest Node.js 24 release [rhel-9.8.z] (JIRA:RHEL-186580) 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
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The advisory covers 15 distinct CVEs affecting Node.js 24 and related components. These include cross-site scripting via improper HTML escaping (CVE-2026-42338), denial of service through unbounded memory growth in WebSocket frames (CVE-2026-12151), information disclosure due to cache-control header parsing errors (CVE-2026-9678), response queue poisoning on reused keep-alive sockets (CVE-2026-6733), weakening of cookie SameSite policy (CVE-2026-11525), man-in-the-middle attacks via ignored TLS options with SOCKS5 proxy (CVE-2026-9697), and multiple TLS-related authentication and trust policy bypasses (e.g., CVE-2026-48934, CVE-2026-48618). The update rebases Node.js 24 to the latest upstream release to address these issues. The affected versions are Node.js 24 releases from 24.0.0 up to but not including 24.18.0 on Red Hat Enterprise Linux 9.
Potential Impact
The vulnerabilities collectively impact the confidentiality, integrity, and availability of Node.js applications running on affected Red Hat Enterprise Linux 9 systems. They enable potential cross-site scripting attacks, denial of service conditions, information disclosure of sensitive data including proxy credentials, authentication bypasses, and man-in-the-middle attacks. These issues can lead to incorrect response delivery, unauthorized file metadata modification, and weakening of security policies such as cookie SameSite enforcement. The severity is rated as high by Red Hat Product Security.
Mitigation Recommendations
A security update for the nodejs:24 module is available for Red Hat Enterprise Linux 9 that addresses all listed vulnerabilities by rebasing to the latest Node.js 24 release. Users should apply this update promptly following Red Hat's official guidance at https://access.redhat.com/articles/11258. No additional mitigation steps are indicated beyond applying the official patch.
Technical Details
- Gcve Source
- db.gcve.eu
- Csaf Category
- csaf_security_advisory
- Csaf Version
- 2.0
- Publisher
- Red Hat Product Security
- Advisory Id
- RHSA-2026:35891
- Cve Count
- 15
- Additional Cves
- ["CVE-2026-6734","CVE-2026-9678","CVE-2026-9697","CVE-2026-11525","CVE-2026-12151","CVE-2026-42338","CVE-2026-48615","CVE-2026-48618","CVE-2026-48619","CVE-2026-48928","CVE-2026-48930","CVE-2026-48933","CVE-2026-48934","CVE-2026-48935"]
- Cvss Version
- null
Threat ID: 6a4c341d27e9c797195f8af1
Added to database: 07/06/2026, 23:02:53 UTC
Last enriched: 08/10/2026, 20:02:48 UTC
Last updated: 08/19/2026, 13:51:34 UTC
Views: 148
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