RHSA-2026:25561MediumCVSS 5.9

Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update

Published
June 13, 2026
Last Modified
August 9, 2026

🔗 CVE IDs covered (1)

CVE-2026-9675 →

📋 Description

CVE-2026-9675 — undici: undici WebSocket client vulnerable to denial of service via cumulative fragment bypass

🎯 Affected products5

  • Red Hat Hardened Images
  • nodejs24-main@aarch64 as a component of Red Hat Hardened Images
  • nodejs24-main@noarch as a component of Red Hat Hardened Images
  • nodejs24-main@src as a component of Red Hat Hardened Images
  • nodejs24-main@x86_64 as a component of Red Hat Hardened Images

✅ Remediation

For details on how to apply this update, which includes the changes described in this advisory, refer to: https://images.redhat.com/ Workaround: Red Hat products that bundle the undici HTTP client ship versions 5.x, 6.x, and 7.x, which do not contain the vulnerable WebSocket frame accumulation code path introduced in undici 8.0.0. No Red Hat product streams are affected by this vulnerability. Users who have manually installed undici 8.x outside of Red Hat-provided packages should upgrade to undici 8.5.0 or later to fully resolve this issue.

🔗 References (5)