ESB-2026.3580
PUBLISHED
CVSS 7.5 HIGH
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AUSCERT External Security Bulletin Redistribution
ESB-2026.3580
nodejs:20 security update
14 April 2026
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AUSCERT Security Bulletin Summary
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Product: nodejs:20
Publisher: Red Hat
Operating System: Red Hat
Resolution: Patch/Upgrade
CVE Names: CVE-2026-26996 CVE-2026-27904 CVE-2026-21710
CVE-2026-27135
Original Bulletin:
https://access.redhat.com/errata/RHSA-2026:7896
Comment: CVSS (Max): 7.5 CVE-2026-27135 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
CVSS Source: Red Hat
Calculator: https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS (Max): 0.0% (6th) CVE-2026-27904 2026-04-13
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RHSA-2026:7896 - Security Advisory
Issued: 2026-04-13
Updated: 2026-04-13
Synopsis
Nodejs:20 security update
Type/Severity
Security Advisory: Important
Topic
An update for the nodejs:20 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):
o minimatch: minimatch: Denial of Service via specially crafted glob patterns
(CVE-2026-26996)
o minimatch: Minimatch: Denial of Service via catastrophic backtracking in
glob expressions (CVE-2026-27904)
o nghttp2: nghttp2: Denial of Service via malformed HTTP/2 frames after
session termination (CVE-2026-27135)
o 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.
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
o Red Hat Enterprise Linux for x86_64 9 x86_64
o Red Hat Enterprise Linux for IBM z Systems 9 s390x
o Red Hat Enterprise Linux for Power, little endian 9 ppc64le
o Red Hat Enterprise Linux for ARM 64 9 aarch64
Fixes
o BZ - 2441268 - CVE-2026-26996 minimatch: minimatch: Denial of Service via
specially crafted glob patterns
o BZ - 2442922 - CVE-2026-27904 minimatch: Minimatch: Denial of Service via
catastrophic backtracking in glob expressions
o BZ - 2448754 - CVE-2026-27135 nghttp2: nghttp2: Denial of Service via
malformed HTTP/2 frames after session termination
o BZ - 2453151 - CVE-2026-21710 Node.js: Node.js: Denial of Service due to
crafted HTTP `__proto__` header
o RHEL-164336 - nodejs:20/nodejs: Rebase to the latest Node.js 20 release
[rhel-9.7.z]
CVEs
o CVE-2026-21710
o CVE-2026-26996
o CVE-2026-27135
o CVE-2026-27904
References
o https://access.redhat.com/security/updates/classification/#important
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