RHSA-2026:35891 - Security Advisory

Topic

An update for the nodejs:24 module is now available for Red Hat Enterprise Linux 9.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

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.

Solution

For details on how to apply this update, which includes the changes described in this advisory, refer to:

https://access.redhat.com/articles/11258

Affected Products

• Red Hat Enterprise Linux for x86_64 9 x86_64
• Red Hat Enterprise Linux for x86_64 - Extended Update Support 9.8 x86_64
• Red Hat Enterprise Linux for IBM z Systems 9 s390x
• Red Hat Enterprise Linux for IBM z Systems - Extended Update Support 9.8 s390x
• Red Hat Enterprise Linux for Power, little endian 9 ppc64le
• Red Hat Enterprise Linux for Power, little endian - Extended Update Support 9.8 ppc64le
• Red Hat Enterprise Linux for ARM 64 9 aarch64
• Red Hat Enterprise Linux for ARM 64 - Extended Update Support 9.8 aarch64
• Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions 9.8 ppc64le
• Red Hat Enterprise Linux for x86_64 - Update Services for SAP Solutions 9.8 x86_64
• Red Hat Enterprise Linux for ARM 64 - 4 years of updates 9.8 aarch64
• Red Hat Enterprise Linux for IBM z Systems - 4 years of updates 9.8 s390x
• Red Hat Enterprise Linux for x86_64 - Extended Life Cycle 9.8 x86_64
• Red Hat Enterprise Linux for ARM 64 - Extended Life Cycle 9.8 aarch64
• Red Hat Enterprise Linux for Power, little endian - Extended Life Cycle 9.8 ppc64le
• Red Hat Enterprise Linux for IBM z Systems - Extended Life Cycle 9.8 s390x

Fixes

• BZ - 2476810 - CVE-2026-42338 ip-address: ip-address: Cross-site scripting via improper HTML escaping of untrusted input
• BZ - 2489980 - CVE-2026-12151 undici: undici: Denial of Service due to unbounded memory growth via WebSocket frames
• BZ - 2490000 - CVE-2026-9678 undici: Undici: Information disclosure due to improper cache-control header parsing
• BZ - 2490006 - CVE-2026-6733 undici: Undici: Response queue poisoning on reused keep-alive sockets can lead to incorrect response delivery.
• BZ - 2490008 - CVE-2026-11525 undici: undici: Weakening of cookie SameSite policy due to incorrect parsing of Set-Cookie header
• BZ - 2490018 - CVE-2026-9697 undici: undici: Man-in-the-Middle attack via ignored TLS options with SOCKS5 proxy
• BZ - 2490024 - CVE-2026-6734 undici: undici: Information disclosure and data integrity issues due to incorrect Socks5ProxyAgent connection routing
• BZ - 2493325 - CVE-2026-48619 nodejs: Node.js: Denial of Service via unlimited HTTP/2 ORIGIN frames
• BZ - 2493326 - CVE-2026-48930 nodejs: Node.js: Silent authority rebinding due to embedded-nul hostnames in TLS handling
• BZ - 2493329 - CVE-2026-48935 nodejs: Node.js: Unauthorized file metadata modification
• BZ - 2493331 - CVE-2026-48933 nodejs: Node.js WebCrypto: Denial of Service via large input to subtle.encrypt()
• BZ - 2493332 - CVE-2026-48934 nodejs: Node.js: Certification validation bypass in TLS host verification
• BZ - 2493333 - CVE-2026-48928 Node.js: Node.js: Trust-policy bypass due to hostname matching inconsistency
• BZ - 2493335 - CVE-2026-48615 nodejs: Node.js: Information disclosure of proxy credentials via proxy tunnel error handling
• BZ - 2493337 - CVE-2026-48618 nodejs: Node.js: Authentication bypass due to TLS hostname handling and unicode dot separator mismatch
• RHEL-186580 - nodejs:24/nodejs: Rebase to the latest Node.js 24 release [rhel-9.8.z]

CVEs

• CVE-2026-6733
• 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

References

• https://access.redhat.com/security/updates/classification/#important