RHSA-2026:39246 - Security Advisory

Topic

An update for nodejs22 is now available for Red Hat Enterprise Linux 10.0 Extended Update Support.

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 platform built on Chrome's JavaScript runtime \ for easily building fast, scalable network applications. \ Node.js uses an event-driven, non-blocking I/O model that \ makes it lightweight and efficient, perfect for data-intensive \ real-time applications that run across distributed devices.

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)
• nodejs: Node.js WebCrypto: Denial of Service via large input to subtle.encrypt() (CVE-2026-48933)
• 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)

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 - Extended Update Support 10.0 x86_64
• Red Hat Enterprise Linux for IBM z Systems - Extended Update Support 10.0 s390x
• Red Hat Enterprise Linux for Power, little endian - Extended Update Support 10.0 ppc64le
• Red Hat Enterprise Linux for ARM 64 - Extended Update Support 10.0 aarch64
• Red Hat Enterprise Linux for ARM 64 - 4 years of updates 10.0 aarch64
• Red Hat Enterprise Linux for IBM z Systems - 4 years of updates 10.0 s390x
• Red Hat Enterprise Linux for Power, little endian - 4 years of support 10.0 ppc64le
• Red Hat Enterprise Linux for x86_64 - 4 years of updates 10.0 x86_64

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 - 2493331 - CVE-2026-48933 nodejs: Node.js WebCrypto: Denial of Service via large input to subtle.encrypt()
• 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

CVEs

• CVE-2026-12151
• CVE-2026-42338
• CVE-2026-48615
• CVE-2026-48618
• CVE-2026-48933

References

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