RHSA-2026:66356HighCVSS 8.1

Red Hat Security Advisory: OpenShift Container Platform 4.22.14 packages and security update

Published
September 15, 2026
Last Modified
September 17, 2026

🔗 CVE IDs covered (5)

CVE-2026-56859 →CVE-2026-56860 →CVE-2026-56862 →CVE-2026-33818 →CVE-2026-56858 →

📋 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-2026-56859 — encoding/xml: golang: Go: Denial of Service via XML decoding recursion depth issue 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 products66

  • Red Hat OpenShift Container Platform 4.22
  • cri-o-0:1.35.7-10.rhaos4.22.git4c47184.el9.aarch64 as a component of Red Hat OpenShift Container Platform 4.22
  • cri-o-0:1.35.7-10.rhaos4.22.git4c47184.el9.ppc64le as a component of Red Hat OpenShift Container Platform 4.22
  • cri-o-0:1.35.7-10.rhaos4.22.git4c47184.el9.s390x as a component of Red Hat OpenShift Container Platform 4.22
  • cri-o-0:1.35.7-10.rhaos4.22.git4c47184.el9.src as a component of Red Hat OpenShift Container Platform 4.22
  • cri-o-0:1.35.7-10.rhaos4.22.git4c47184.el9.x86_64 as a component of Red Hat OpenShift Container Platform 4.22
  • cri-o-debuginfo-0:1.35.7-10.rhaos4.22.git4c47184.el9.aarch64 as a component of Red Hat OpenShift Container Platform 4.22
  • cri-o-debuginfo-0:1.35.7-10.rhaos4.22.git4c47184.el9.ppc64le as a component of Red Hat OpenShift Container Platform 4.22
  • cri-o-debuginfo-0:1.35.7-10.rhaos4.22.git4c47184.el9.s390x as a component of Red Hat OpenShift Container Platform 4.22
  • cri-o-debuginfo-0:1.35.7-10.rhaos4.22.git4c47184.el9.x86_64 as a component of Red Hat OpenShift Container Platform 4.22
  • cri-o-debugsource-0:1.35.7-10.rhaos4.22.git4c47184.el9.aarch64 as a component of Red Hat OpenShift Container Platform 4.22
  • cri-o-debugsource-0:1.35.7-10.rhaos4.22.git4c47184.el9.ppc64le as a component of Red Hat OpenShift Container Platform 4.22
  • cri-o-debugsource-0:1.35.7-10.rhaos4.22.git4c47184.el9.s390x as a component of Red Hat OpenShift Container Platform 4.22
  • cri-o-debugsource-0:1.35.7-10.rhaos4.22.git4c47184.el9.x86_64 as a component of Red Hat OpenShift Container Platform 4.22
  • cri-tools-0:1.35.0-4.el9.aarch64 as a component of Red Hat OpenShift Container Platform 4.22
  • cri-tools-0:1.35.0-4.el9.ppc64le as a component of Red Hat OpenShift Container Platform 4.22
  • cri-tools-0:1.35.0-4.el9.s390x as a component of Red Hat OpenShift Container Platform 4.22
  • cri-tools-0:1.35.0-4.el9.src as a component of Red Hat OpenShift Container Platform 4.22
  • cri-tools-0:1.35.0-4.el9.x86_64 as a component of Red Hat OpenShift Container Platform 4.22
  • cri-tools-debuginfo-0:1.35.0-4.el9.aarch64 as a component of Red Hat OpenShift Container Platform 4.22
  • cri-tools-debuginfo-0:1.35.0-4.el9.ppc64le as a component of Red Hat OpenShift Container Platform 4.22
  • cri-tools-debuginfo-0:1.35.0-4.el9.s390x as a component of Red Hat OpenShift Container Platform 4.22
  • cri-tools-debuginfo-0:1.35.0-4.el9.x86_64 as a component of Red Hat OpenShift Container Platform 4.22
  • cri-tools-debugsource-0:1.35.0-4.el9.aarch64 as a component of Red Hat OpenShift Container Platform 4.22
  • cri-tools-debugsource-0:1.35.0-4.el9.ppc64le as a component of Red Hat OpenShift Container Platform 4.22
  • cri-tools-debugsource-0:1.35.0-4.el9.s390x as a component of Red Hat OpenShift Container Platform 4.22
  • cri-tools-debugsource-0:1.35.0-4.el9.x86_64 as a component of Red Hat OpenShift Container Platform 4.22
  • haproxy-0:2.8.18-2.rhaos4.22.el9.src as a component of Red Hat OpenShift Container Platform 4.22
  • haproxy-debugsource-0:2.8.18-2.rhaos4.22.el9.aarch64 as a component of Red Hat OpenShift Container Platform 4.22
  • haproxy-debugsource-0:2.8.18-2.rhaos4.22.el9.ppc64le as a component of Red Hat OpenShift Container Platform 4.22
  • +36 more not shown

✅ Remediation

For OpenShift Container Platform 4.22 see the following documentation, which will be updated shortly for this release, for important instructions on how to upgrade your cluster and fully apply this asynchronous errata update: https://docs.redhat.com/en/documentation/openshift_container_platform/4.22/html/release_notes/ Workaround: Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.

🔗 References (8)