RHSA-2026:98522 - Security Advisory

Topic

An update for the nodejs:26 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):

• brace-expansion: brace-expansion: Denial of Service via uncontrolled recursion in nested brace patterns (CVE-2026-102278)
• brace-expansion: brace-expansion: Denial of Service via stack exhaustion from crafted brace patterns (CVE-2026-102276)
• undici: undici: Denial of Service via unhandled stream error on excessive content encodings (CVE-2026-109869)
• undici: undici: Denial of Service via TLS renegotiation with mismatched certificate (CVE-2026-87018)
• undici: undici: Certificate validation bypass via dropped TLS options in Agent (CVE-2026-109383)
• undici: undici: Cache poisoning and information disclosure via improper cross-origin redirect caching (CVE-2026-109829)
• brotli: Out-of-Bounds Write in Google Brotli Decoder (CVE-2026-111497)
• nodejs: nodejs: TLS certificate hostname bypass via fullwidth-digit IP hostnames (CVE-2026-105483)
• nodejs: nodejs: TLS certificate hostname bypass via non-canonical IP hostnames (CVE-2026-106069)
• nodejs: nodejs: dns.resolve truncates hostnames containing a NUL character (CVE-2026-105482)

Bug Fix(es) and Enhancement(s):

• nodejs:26/nodejs: Rebase to the latest Node.js 26 release [rhel-9.9] (JIRA:RHEL-289767)

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 IBM z Systems 9 s390x
• Red Hat Enterprise Linux for Power, little endian 9 ppc64le
• Red Hat Enterprise Linux for ARM 64 9 aarch64

Fixes

• BZ - 2542700 - CVE-2026-102278 brace-expansion: brace-expansion: Denial of Service via uncontrolled recursion in nested brace patterns
• BZ - 2542707 - CVE-2026-102276 brace-expansion: brace-expansion: Denial of Service via stack exhaustion from crafted brace patterns
• BZ - 2553656 - CVE-2026-109869 undici: undici: Denial of Service via unhandled stream error on excessive content encodings
• BZ - 2553677 - CVE-2026-87018 undici: undici: Denial of Service via TLS renegotiation with mismatched certificate
• BZ - 2553678 - CVE-2026-109383 undici: undici: Certificate validation bypass via dropped TLS options in Agent
• BZ - 2553679 - CVE-2026-109829 undici: undici: Cache poisoning and information disclosure via improper cross-origin redirect caching
• BZ - 2558973 - CVE-2026-111497 brotli: Out-of-Bounds Write in Google Brotli Decoder
• BZ - 2559870 - CVE-2026-105483 nodejs: nodejs: TLS certificate hostname bypass via fullwidth-digit IP hostnames
• BZ - 2559873 - CVE-2026-106069 nodejs: nodejs: TLS certificate hostname bypass via non-canonical IP hostnames
• BZ - 2559875 - CVE-2026-105482 nodejs: nodejs: dns.resolve truncates hostnames containing a NUL character
• RHEL-289767 - nodejs:26/nodejs: Rebase to the latest Node.js 26 release [rhel-9.9.z]

CVEs

• CVE-2026-87018
• CVE-2026-102276
• CVE-2026-102278
• CVE-2026-105482
• CVE-2026-105483
• CVE-2026-106069
• CVE-2026-109383
• CVE-2026-109829
• CVE-2026-109869
• CVE-2026-111497

References

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