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High ALSA-2026:73838 3 CVEs

Important: nodejs:24 security, bug fix, and enhancement update

Published Sep 30, 2026 · Updated Oct 29, 2026

Ecosystem: AlmaLinux

Summary

Node.js is a software development platform for building fast and scalable network applications in the JavaScript programming language.

Security Fix(es):

* undici: undici: Authentication bypass via cross-origin cache poisoning due to missing origin isolation (CVE-2026-85152)
* undici: undici: TLS certificate validation bypass in BalancedPool via dropped connect options (CVE-2026-84961)
* undici: undici: Denial of Service via unrequested WebSocket subprotocol (CVE-2026-19534)

Bug Fix(es) and Enhancement(s):

* nodejs:24/nodejs: Rebase to the latest Node.js 24 release [almalinux-9.8.z] (JIRA:AlmaLinux-249189)

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.

Fixed packages 10

ReleasePackageFixed in
AlmaLinux · 9 nodejs 1:24.21.0-1.module_el9.8.0+321+1555b6a2
AlmaLinux · 9 nodejs-devel 1:24.21.0-1.module_el9.8.0+321+1555b6a2
AlmaLinux · 9 nodejs-docs 1:24.21.0-1.module_el9.8.0+321+1555b6a2
AlmaLinux · 9 nodejs-full-i18n 1:24.21.0-1.module_el9.8.0+321+1555b6a2
AlmaLinux · 9 nodejs-libs 1:24.21.0-1.module_el9.8.0+321+1555b6a2
AlmaLinux · 9 nodejs-nodemon 3.1.14-3.module_el9.8.0+292+f4eaf8b2
AlmaLinux · 9 nodejs-packaging 2021.06-6.module_el9.7.0+209+ecf6523e
AlmaLinux · 9 nodejs-packaging-bundler 2021.06-6.module_el9.7.0+209+ecf6523e
AlmaLinux · 9 npm 1:11.19.0-1.24.21.0.1.module_el9.8.0+321+1555b6a2
AlmaLinux · 9 v8-13.6-devel 3:13.6.233.17-1.24.21.0.1.module_el9.8.0+321+1555b6a2

Vulnerabilities 3

  • High 7.5
    CVE-2026-19534

    undici vulnerable to Denial of Service via unrequested WebSocket subprotocol

    undici's WebSocket client crashes the whole Node.js process during the opening handshake when a server responds with a subprotocol that the client never requested. A default WebSocket connection sends no subprotocol, but if the server's 101 response includes …

    undici undici renovate prism Debian Ubuntu Wolfi npm
  • High 7.4
    CVE-2026-84961

    undici vulnerable to TLS certificate validation bypass via dropped connect options in BalancedPool

    undici's BalancedPool constructor passes its entire options object through an internal deep-clone that serializes and reparses the value as JSON. Because JSON cannot represent functions, any function-valued TLS option, such as a caller-supplied checkServerIde…

    undici undici prism lerna Debian Ubuntu Wolfi npm
  • High 7.4
    CVE-2026-85152

    undici vulnerable to cross-origin cache poisoning via missing origin isolation in interceptors

    undici 8.10.0 omits the destination origin from the cache and request-deduplication keys when the cache or deduplicate interceptor is composed directly onto a Client or Pool. Because the internal cache key falls back to an empty origin string, a cacheable or …

    undici undici node-undici node-undici Debian Ubuntu npm

References

  • report
    https://access.redhat.com/security/cve/CVE-2026-19534
  • report
    https://access.redhat.com/security/cve/CVE-2026-84961
  • report
    https://access.redhat.com/security/cve/CVE-2026-85152
  • report
    https://bugzilla.redhat.com/2528717
  • report
    https://bugzilla.redhat.com/2528735
  • report
    https://bugzilla.redhat.com/2528759
  • advisory
    https://errata.almalinux.org/9/ALSA-2026-73838.html