RHSA-2026:21433HighCVSS 8.2

Red Hat Security Advisory: httpd security update

Published
May 27, 2026
Last Modified
September 21, 2026

🔗 CVE IDs covered (5)

CVE-2026-33857 →CVE-2026-34032 →CVE-2026-34059 →CVE-2026-28780 →CVE-2026-33007 →

📋 Description

CVE-2026-28780 — Apache HTTP Server: mod_proxy_ajp: Apache HTTP Server mod_proxy_ajp: Arbitrary code execution via heap-based buffer overflow CVE-2026-33007 — httpd: mod_authn_socache: NULL pointer dereference can cause a child process crash CVE-2026-33857 — httpd: mod_proxy_ajp: off-by-one out-of-bounds reads in AJP getter functions CVE-2026-34032 — httpd: mod_proxy_ajp: heap-based buffer over-read due to missing null-termination check CVE-2026-34059 — httpd: mod_proxy_ajp: heap-based buffer over-read and memory disclosure in ajp_parse_data()

🎯 Affected products76

  • Red Hat Enterprise Linux AppStream (v. 10)
  • httpd-0:2.4.63-13.el10_2.1.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10)
  • httpd-0:2.4.63-13.el10_2.1.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 10)
  • httpd-0:2.4.63-13.el10_2.1.s390x as a component of Red Hat Enterprise Linux AppStream (v. 10)
  • httpd-0:2.4.63-13.el10_2.1.src as a component of Red Hat Enterprise Linux AppStream (v. 10)
  • httpd-0:2.4.63-13.el10_2.1.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 10)
  • httpd-core-0:2.4.63-13.el10_2.1.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10)
  • httpd-core-0:2.4.63-13.el10_2.1.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 10)
  • httpd-core-0:2.4.63-13.el10_2.1.s390x as a component of Red Hat Enterprise Linux AppStream (v. 10)
  • httpd-core-0:2.4.63-13.el10_2.1.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 10)
  • httpd-core-debuginfo-0:2.4.63-13.el10_2.1.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10)
  • httpd-core-debuginfo-0:2.4.63-13.el10_2.1.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 10)
  • httpd-core-debuginfo-0:2.4.63-13.el10_2.1.s390x as a component of Red Hat Enterprise Linux AppStream (v. 10)
  • httpd-core-debuginfo-0:2.4.63-13.el10_2.1.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 10)
  • httpd-debuginfo-0:2.4.63-13.el10_2.1.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10)
  • httpd-debuginfo-0:2.4.63-13.el10_2.1.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 10)
  • httpd-debuginfo-0:2.4.63-13.el10_2.1.s390x as a component of Red Hat Enterprise Linux AppStream (v. 10)
  • httpd-debuginfo-0:2.4.63-13.el10_2.1.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 10)
  • httpd-debugsource-0:2.4.63-13.el10_2.1.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10)
  • httpd-debugsource-0:2.4.63-13.el10_2.1.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 10)
  • httpd-debugsource-0:2.4.63-13.el10_2.1.s390x as a component of Red Hat Enterprise Linux AppStream (v. 10)
  • httpd-debugsource-0:2.4.63-13.el10_2.1.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 10)
  • httpd-devel-0:2.4.63-13.el10_2.1.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10)
  • httpd-devel-0:2.4.63-13.el10_2.1.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 10)
  • httpd-devel-0:2.4.63-13.el10_2.1.s390x as a component of Red Hat Enterprise Linux AppStream (v. 10)
  • httpd-devel-0:2.4.63-13.el10_2.1.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 10)
  • httpd-filesystem-0:2.4.63-13.el10_2.1.noarch as a component of Red Hat Enterprise Linux AppStream (v. 10)
  • httpd-manual-0:2.4.63-13.el10_2.1.noarch as a component of Red Hat Enterprise Linux AppStream (v. 10)
  • httpd-tools-0:2.4.63-13.el10_2.1.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10)
  • httpd-tools-0:2.4.63-13.el10_2.1.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 10)
  • +46 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: Disabling mod_authn_socache and restarting httpd will mitigate this flaw. Workaround: Disabling mod_proxy_ajp and restarting httpd will mitigate this flaw.

🔗 References (8)