RHSA-2026:69107HighCVSS 8.1

Red Hat Security Advisory: rhc security update

Published
September 21, 2026
Last Modified
October 5, 2026

🔗 CVE IDs covered (4)

CVE-2026-33818 →CVE-2026-56858 →CVE-2026-56860 →CVE-2026-56862 →

📋 Description

CVE-2026-33818 — encoding/asn1: golang: Go encoding/asn1: Denial of Service via excessive recursion in Unmarshal CVE-2026-56858 — html/template: golang: Go html/template: Cross-Site Scripting via pathological input CVE-2026-56860 — net/url: golang: golang net/url: Denial of Service from quadratic complexity in path resolution CVE-2026-56862 — crypto/tls: golang: Golang crypto/tls: Denial of Service via indefinite KeyUpdate messages

🎯 Affected products27

  • Red Hat CodeReady Linux Builder EUS (v.9.6)
  • Red Hat Enterprise Linux AppStream EUS (v.9.6)
  • rhc-1:0.2.7-1.el9_6.6.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v.9.6)
  • rhc-1:0.2.7-1.el9_6.6.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v.9.6)
  • rhc-1:0.2.7-1.el9_6.6.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v.9.6)
  • rhc-1:0.2.7-1.el9_6.6.src as a component of Red Hat Enterprise Linux AppStream EUS (v.9.6)
  • rhc-1:0.2.7-1.el9_6.6.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v.9.6)
  • rhc-debuginfo-1:0.2.7-1.el9_6.6.aarch64 as a component of Red Hat CodeReady Linux Builder EUS (v.9.6)
  • rhc-debuginfo-1:0.2.7-1.el9_6.6.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v.9.6)
  • rhc-debuginfo-1:0.2.7-1.el9_6.6.ppc64le as a component of Red Hat CodeReady Linux Builder EUS (v.9.6)
  • rhc-debuginfo-1:0.2.7-1.el9_6.6.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v.9.6)
  • rhc-debuginfo-1:0.2.7-1.el9_6.6.s390x as a component of Red Hat CodeReady Linux Builder EUS (v.9.6)
  • rhc-debuginfo-1:0.2.7-1.el9_6.6.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v.9.6)
  • rhc-debuginfo-1:0.2.7-1.el9_6.6.x86_64 as a component of Red Hat CodeReady Linux Builder EUS (v.9.6)
  • rhc-debuginfo-1:0.2.7-1.el9_6.6.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v.9.6)
  • rhc-debugsource-1:0.2.7-1.el9_6.6.aarch64 as a component of Red Hat CodeReady Linux Builder EUS (v.9.6)
  • rhc-debugsource-1:0.2.7-1.el9_6.6.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v.9.6)
  • rhc-debugsource-1:0.2.7-1.el9_6.6.ppc64le as a component of Red Hat CodeReady Linux Builder EUS (v.9.6)
  • rhc-debugsource-1:0.2.7-1.el9_6.6.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v.9.6)
  • rhc-debugsource-1:0.2.7-1.el9_6.6.s390x as a component of Red Hat CodeReady Linux Builder EUS (v.9.6)
  • rhc-debugsource-1:0.2.7-1.el9_6.6.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v.9.6)
  • rhc-debugsource-1:0.2.7-1.el9_6.6.x86_64 as a component of Red Hat CodeReady Linux Builder EUS (v.9.6)
  • rhc-debugsource-1:0.2.7-1.el9_6.6.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v.9.6)
  • rhc-devel-1:0.2.7-1.el9_6.6.aarch64 as a component of Red Hat CodeReady Linux Builder EUS (v.9.6)
  • rhc-devel-1:0.2.7-1.el9_6.6.ppc64le as a component of Red Hat CodeReady Linux Builder EUS (v.9.6)
  • rhc-devel-1:0.2.7-1.el9_6.6.s390x as a component of Red Hat CodeReady Linux Builder EUS (v.9.6)
  • rhc-devel-1:0.2.7-1.el9_6.6.x86_64 as a component of Red Hat CodeReady Linux Builder EUS (v.9.6)

✅ 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

🔗 References (7)