RHSA-2026:73838HighCVSS 7.5

Red Hat Security Advisory: nodejs:24 security, bug fix, and enhancement update

Published
September 30, 2026
Last Modified
October 13, 2026

🔗 CVE IDs covered (3)

CVE-2026-19534 →CVE-2026-84961 →CVE-2026-85152 →

📋 Description

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

🎯 Affected products41

  • Red Hat Enterprise Linux AppStream (v. 9)
  • nodejs-1:24.21.0-1.module+el9.8.0+24924+cd677006.aarch64 (nodejs:24) as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • nodejs-1:24.21.0-1.module+el9.8.0+24924+cd677006.ppc64le (nodejs:24) as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • nodejs-1:24.21.0-1.module+el9.8.0+24924+cd677006.s390x (nodejs:24) as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • nodejs-1:24.21.0-1.module+el9.8.0+24924+cd677006.src (nodejs:24) as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • nodejs-1:24.21.0-1.module+el9.8.0+24924+cd677006.x86_64 (nodejs:24) as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • nodejs-debuginfo-1:24.21.0-1.module+el9.8.0+24924+cd677006.aarch64 (nodejs:24) as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • nodejs-debuginfo-1:24.21.0-1.module+el9.8.0+24924+cd677006.ppc64le (nodejs:24) as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • nodejs-debuginfo-1:24.21.0-1.module+el9.8.0+24924+cd677006.s390x (nodejs:24) as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • nodejs-debuginfo-1:24.21.0-1.module+el9.8.0+24924+cd677006.x86_64 (nodejs:24) as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • nodejs-debugsource-1:24.21.0-1.module+el9.8.0+24924+cd677006.aarch64 (nodejs:24) as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • nodejs-debugsource-1:24.21.0-1.module+el9.8.0+24924+cd677006.ppc64le (nodejs:24) as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • nodejs-debugsource-1:24.21.0-1.module+el9.8.0+24924+cd677006.s390x (nodejs:24) as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • nodejs-debugsource-1:24.21.0-1.module+el9.8.0+24924+cd677006.x86_64 (nodejs:24) as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • nodejs-devel-1:24.21.0-1.module+el9.8.0+24924+cd677006.aarch64 (nodejs:24) as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • nodejs-devel-1:24.21.0-1.module+el9.8.0+24924+cd677006.ppc64le (nodejs:24) as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • nodejs-devel-1:24.21.0-1.module+el9.8.0+24924+cd677006.s390x (nodejs:24) as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • nodejs-devel-1:24.21.0-1.module+el9.8.0+24924+cd677006.x86_64 (nodejs:24) as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • nodejs-docs-1:24.21.0-1.module+el9.8.0+24924+cd677006.noarch (nodejs:24) as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • nodejs-full-i18n-1:24.21.0-1.module+el9.8.0+24924+cd677006.aarch64 (nodejs:24) as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • nodejs-full-i18n-1:24.21.0-1.module+el9.8.0+24924+cd677006.ppc64le (nodejs:24) as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • nodejs-full-i18n-1:24.21.0-1.module+el9.8.0+24924+cd677006.s390x (nodejs:24) as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • nodejs-full-i18n-1:24.21.0-1.module+el9.8.0+24924+cd677006.x86_64 (nodejs:24) as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • nodejs-libs-1:24.21.0-1.module+el9.8.0+24924+cd677006.aarch64 (nodejs:24) as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • nodejs-libs-1:24.21.0-1.module+el9.8.0+24924+cd677006.ppc64le (nodejs:24) as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • nodejs-libs-1:24.21.0-1.module+el9.8.0+24924+cd677006.s390x (nodejs:24) as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • nodejs-libs-1:24.21.0-1.module+el9.8.0+24924+cd677006.x86_64 (nodejs:24) as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • nodejs-libs-debuginfo-1:24.21.0-1.module+el9.8.0+24924+cd677006.aarch64 (nodejs:24) as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • nodejs-libs-debuginfo-1:24.21.0-1.module+el9.8.0+24924+cd677006.ppc64le (nodejs:24) as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • nodejs-libs-debuginfo-1:24.21.0-1.module+el9.8.0+24924+cd677006.s390x (nodejs:24) as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • +11 more not shown

✅ Remediation

For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 Workaround: Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability. Workaround: Applications that do not use BalancedPool, or that use it without a custom function-valued connect/tls option, are not affected and require no action. As a workaround until packages are updated, avoid using BalancedPool for any connection that relies on custom TLS certificate validation (e.g. certificate pinning); use Client, Pool, or Agent instead, which are unaffected. The permanent fix is upgrading undici to 7.29.1 or later (7.x line) or 8.10.2 or later (8.x line). Workaround: Red Hat has investigated whether a possible mitigation exists for this issue, and has not been able to identify a practical example. Please update the affected package as soon as possible to undici 8.10.2 or later.

🔗 References (7)