RHSA-2026:57642MediumCVSS 7.5

Red Hat Security Advisory: mod_md security update

Published
August 20, 2026
Last Modified
August 21, 2026

🔗 CVE IDs covered (1)

CVE-2026-29168 →

📋 Description

CVE-2026-29168 — httpd: mod_md: unrestricted OCSP response leads to resource exhaustion

🎯 Affected products14

  • Red Hat Enterprise Linux AppStream E4S (v.9.2)
  • mod_md-1:2.4.19-1.el9_2.2.aarch64 as a component of Red Hat Enterprise Linux AppStream E4S (v.9.2)
  • mod_md-1:2.4.19-1.el9_2.2.ppc64le as a component of Red Hat Enterprise Linux AppStream E4S (v.9.2)
  • mod_md-1:2.4.19-1.el9_2.2.s390x as a component of Red Hat Enterprise Linux AppStream E4S (v.9.2)
  • mod_md-1:2.4.19-1.el9_2.2.src as a component of Red Hat Enterprise Linux AppStream E4S (v.9.2)
  • mod_md-1:2.4.19-1.el9_2.2.x86_64 as a component of Red Hat Enterprise Linux AppStream E4S (v.9.2)
  • mod_md-debuginfo-1:2.4.19-1.el9_2.2.aarch64 as a component of Red Hat Enterprise Linux AppStream E4S (v.9.2)
  • mod_md-debuginfo-1:2.4.19-1.el9_2.2.ppc64le as a component of Red Hat Enterprise Linux AppStream E4S (v.9.2)
  • mod_md-debuginfo-1:2.4.19-1.el9_2.2.s390x as a component of Red Hat Enterprise Linux AppStream E4S (v.9.2)
  • mod_md-debuginfo-1:2.4.19-1.el9_2.2.x86_64 as a component of Red Hat Enterprise Linux AppStream E4S (v.9.2)
  • mod_md-debugsource-1:2.4.19-1.el9_2.2.aarch64 as a component of Red Hat Enterprise Linux AppStream E4S (v.9.2)
  • mod_md-debugsource-1:2.4.19-1.el9_2.2.ppc64le as a component of Red Hat Enterprise Linux AppStream E4S (v.9.2)
  • mod_md-debugsource-1:2.4.19-1.el9_2.2.s390x as a component of Red Hat Enterprise Linux AppStream E4S (v.9.2)
  • mod_md-debugsource-1:2.4.19-1.el9_2.2.x86_64 as a component of Red Hat Enterprise Linux AppStream E4S (v.9.2)

✅ 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: Disabling mod_md and restarting httpd will mitigate this flaw.

🔗 References (4)