RHSA-2026:54883HighCVSS 7.5

Red Hat Security Advisory: Red Hat build of MicroShift 4.19.43 security update

Published
August 19, 2026
Last Modified
August 19, 2026

🔗 CVE IDs covered (1)

CVE-2026-39820 →

📋 Description

CVE-2026-39820 — net/mail: golang: Go net/mail: Denial of Service via crafted email inputs

🎯 Affected products22

  • Red Hat OpenShift Container Platform 4.19
  • microshift-0:4.19.43-202608141837.p0.gcd3decf.assembly.4.19.43.el9.aarch64 as a component of Red Hat OpenShift Container Platform 4.19
  • microshift-0:4.19.43-202608141837.p0.gcd3decf.assembly.4.19.43.el9.src as a component of Red Hat OpenShift Container Platform 4.19
  • microshift-0:4.19.43-202608141837.p0.gcd3decf.assembly.4.19.43.el9.x86_64 as a component of Red Hat OpenShift Container Platform 4.19
  • microshift-ai-model-serving-0:4.19.43-202608141837.p0.gcd3decf.assembly.4.19.43.el9.x86_64 as a component of Red Hat OpenShift Container Platform 4.19
  • microshift-ai-model-serving-release-info-0:4.19.43-202608141837.p0.gcd3decf.assembly.4.19.43.el9.noarch as a component of Red Hat OpenShift Container Platform 4.19
  • microshift-gateway-api-0:4.19.43-202608141837.p0.gcd3decf.assembly.4.19.43.el9.aarch64 as a component of Red Hat OpenShift Container Platform 4.19
  • microshift-gateway-api-0:4.19.43-202608141837.p0.gcd3decf.assembly.4.19.43.el9.x86_64 as a component of Red Hat OpenShift Container Platform 4.19
  • microshift-gateway-api-release-info-0:4.19.43-202608141837.p0.gcd3decf.assembly.4.19.43.el9.noarch as a component of Red Hat OpenShift Container Platform 4.19
  • microshift-greenboot-0:4.19.43-202608141837.p0.gcd3decf.assembly.4.19.43.el9.noarch as a component of Red Hat OpenShift Container Platform 4.19
  • microshift-low-latency-0:4.19.43-202608141837.p0.gcd3decf.assembly.4.19.43.el9.noarch as a component of Red Hat OpenShift Container Platform 4.19
  • microshift-multus-0:4.19.43-202608141837.p0.gcd3decf.assembly.4.19.43.el9.aarch64 as a component of Red Hat OpenShift Container Platform 4.19
  • microshift-multus-0:4.19.43-202608141837.p0.gcd3decf.assembly.4.19.43.el9.x86_64 as a component of Red Hat OpenShift Container Platform 4.19
  • microshift-multus-release-info-0:4.19.43-202608141837.p0.gcd3decf.assembly.4.19.43.el9.noarch as a component of Red Hat OpenShift Container Platform 4.19
  • microshift-networking-0:4.19.43-202608141837.p0.gcd3decf.assembly.4.19.43.el9.aarch64 as a component of Red Hat OpenShift Container Platform 4.19
  • microshift-networking-0:4.19.43-202608141837.p0.gcd3decf.assembly.4.19.43.el9.x86_64 as a component of Red Hat OpenShift Container Platform 4.19
  • microshift-observability-0:4.19.43-202608141837.p0.gcd3decf.assembly.4.19.43.el9.noarch as a component of Red Hat OpenShift Container Platform 4.19
  • microshift-olm-0:4.19.43-202608141837.p0.gcd3decf.assembly.4.19.43.el9.aarch64 as a component of Red Hat OpenShift Container Platform 4.19
  • microshift-olm-0:4.19.43-202608141837.p0.gcd3decf.assembly.4.19.43.el9.x86_64 as a component of Red Hat OpenShift Container Platform 4.19
  • microshift-olm-release-info-0:4.19.43-202608141837.p0.gcd3decf.assembly.4.19.43.el9.noarch as a component of Red Hat OpenShift Container Platform 4.19
  • microshift-release-info-0:4.19.43-202608141837.p0.gcd3decf.assembly.4.19.43.el9.noarch as a component of Red Hat OpenShift Container Platform 4.19
  • microshift-selinux-0:4.19.43-202608141837.p0.gcd3decf.assembly.4.19.43.el9.noarch as a component of Red Hat OpenShift Container Platform 4.19

✅ Remediation

For MicroShift 4.19, read the following documentation for important instructions on how to install the latest RPMs and fully apply this asynchronous errata update: https://docs.redhat.com/en/documentation/red_hat_build_of_microshift/4.19/html/red_hat_build_of_microshift_release_notes/index 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 (4)