RHSA-2026:67314HighCVSS 7.0

Red Hat Security Advisory: nginx security update

Published
September 14, 2026
Last Modified
November 2, 2026

🔗 CVE IDs covered (1)

CVE-2026-42533 →

📋 Description

CVE-2026-42533 — nginx: NGINX: Arbitrary code execution via crafted HTTP requests

🎯 Affected products101

  • Red Hat Enterprise Linux AppStream (v. 10)
  • Red Hat Enterprise Linux CodeReady Linux Builder (v. 10)
  • nginx-2:1.26.3-6.el10_2.7.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10)
  • nginx-2:1.26.3-6.el10_2.7.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 10)
  • nginx-2:1.26.3-6.el10_2.7.s390x as a component of Red Hat Enterprise Linux AppStream (v. 10)
  • nginx-2:1.26.3-6.el10_2.7.src as a component of Red Hat Enterprise Linux AppStream (v. 10)
  • nginx-2:1.26.3-6.el10_2.7.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 10)
  • nginx-all-modules-2:1.26.3-6.el10_2.7.noarch as a component of Red Hat Enterprise Linux AppStream (v. 10)
  • nginx-core-2:1.26.3-6.el10_2.7.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10)
  • nginx-core-2:1.26.3-6.el10_2.7.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 10)
  • nginx-core-2:1.26.3-6.el10_2.7.s390x as a component of Red Hat Enterprise Linux AppStream (v. 10)
  • nginx-core-2:1.26.3-6.el10_2.7.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 10)
  • nginx-core-debuginfo-2:1.26.3-6.el10_2.7.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10)
  • nginx-core-debuginfo-2:1.26.3-6.el10_2.7.aarch64 as a component of Red Hat Enterprise Linux CodeReady Linux Builder (v. 10)
  • nginx-core-debuginfo-2:1.26.3-6.el10_2.7.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 10)
  • nginx-core-debuginfo-2:1.26.3-6.el10_2.7.ppc64le as a component of Red Hat Enterprise Linux CodeReady Linux Builder (v. 10)
  • nginx-core-debuginfo-2:1.26.3-6.el10_2.7.s390x as a component of Red Hat Enterprise Linux AppStream (v. 10)
  • nginx-core-debuginfo-2:1.26.3-6.el10_2.7.s390x as a component of Red Hat Enterprise Linux CodeReady Linux Builder (v. 10)
  • nginx-core-debuginfo-2:1.26.3-6.el10_2.7.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 10)
  • nginx-core-debuginfo-2:1.26.3-6.el10_2.7.x86_64 as a component of Red Hat Enterprise Linux CodeReady Linux Builder (v. 10)
  • nginx-debuginfo-2:1.26.3-6.el10_2.7.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10)
  • nginx-debuginfo-2:1.26.3-6.el10_2.7.aarch64 as a component of Red Hat Enterprise Linux CodeReady Linux Builder (v. 10)
  • nginx-debuginfo-2:1.26.3-6.el10_2.7.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 10)
  • nginx-debuginfo-2:1.26.3-6.el10_2.7.ppc64le as a component of Red Hat Enterprise Linux CodeReady Linux Builder (v. 10)
  • nginx-debuginfo-2:1.26.3-6.el10_2.7.s390x as a component of Red Hat Enterprise Linux AppStream (v. 10)
  • nginx-debuginfo-2:1.26.3-6.el10_2.7.s390x as a component of Red Hat Enterprise Linux CodeReady Linux Builder (v. 10)
  • nginx-debuginfo-2:1.26.3-6.el10_2.7.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 10)
  • nginx-debuginfo-2:1.26.3-6.el10_2.7.x86_64 as a component of Red Hat Enterprise Linux CodeReady Linux Builder (v. 10)
  • nginx-debugsource-2:1.26.3-6.el10_2.7.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10)
  • nginx-debugsource-2:1.26.3-6.el10_2.7.aarch64 as a component of Red Hat Enterprise Linux CodeReady Linux Builder (v. 10)
  • +71 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: To mitigate this vulnerability, do not use unnamed captures. Use named captures instead and only use them in the same block with the regex match. Red Hat recommends updating nginx to the latest version when a fix is available.

🔗 References (4)