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SECURITY ADVISORYRED HATVERIFIED

PUBLISHER UPDATE · RHSA-2026-63636

RHSA-2026-63636 release notes and known issues

Red Hat Security Advisory: Red Hat build of MicroShift 4.19.46 security update

Scope: Red Hat OpenShift Enterprise. This update record adds version, fix and known-issue context. Its publication date is not a lifecycle boundary.

Summary

Red Hat build of MicroShift release 4.19.46 is now available with updates to packages and images that include a security update. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section. Red Hat build of MicroShift is Red Hat's light-weight Kubernetes orchestration solution designed for edge device deployments and is built from the edge capabilities of Red Hat OpenShift Container Platform. MicroShift is an application that is deployed on top of Red Hat Enterprise Linux devices at the edge, providing an efficient way to operate single-node clusters in these low-resource environments. This advisory contains the RPM packages for Red Hat build of MicroShift 4.19.46. Read the following advisory for the container images for this release: https://access.redhat.com/errata/RHSA-2026:63047 Security Fix(es): * net/http/internal/http2: golang: golang.org/x/net: Go HTTP/2: Denial of Service via malformed SETTINGS_MAX_FRAME_SIZE frame (CVE-2026-33814) * net/mail: golang: net/mail: Denial of Service via pathological email address parsing (CVE-2026-42499) All Red Hat build of MicroShift 4.19 users are advised to use these updated packages and images when they are available in the RPM repository.

Known issues

Publisher statement

Not stated. The verified publisher record does not contain a known-issues statement.

Affected products and versions

Products

  • Red Hat OpenShift Enterprise

Affected versions

  • Red Hat OpenShift Container Platform 4.19
  • microshift-0:4.19.46-202609041024.p0.g59e34c7.assembly.4.19.46.el9.src
  • microshift-0:4.19.46-202609041024.p0.g59e34c7.assembly.4.19.46.el9.x86_64
  • microshift-ai-model-serving-0:4.19.46-202609041024.p0.g59e34c7.assembly.4.19.46.el9.x86_64
  • microshift-gateway-api-0:4.19.46-202609041024.p0.g59e34c7.assembly.4.19.46.el9.x86_64
  • microshift-multus-0:4.19.46-202609041024.p0.g59e34c7.assembly.4.19.46.el9.x86_64
  • microshift-networking-0:4.19.46-202609041024.p0.g59e34c7.assembly.4.19.46.el9.x86_64
  • microshift-olm-0:4.19.46-202609041024.p0.g59e34c7.assembly.4.19.46.el9.x86_64
  • microshift-0:4.19.46-202609041024.p0.g59e34c7.assembly.4.19.46.el9.aarch64
  • microshift-gateway-api-0:4.19.46-202609041024.p0.g59e34c7.assembly.4.19.46.el9.aarch64
  • microshift-multus-0:4.19.46-202609041024.p0.g59e34c7.assembly.4.19.46.el9.aarch64
  • microshift-networking-0:4.19.46-202609041024.p0.g59e34c7.assembly.4.19.46.el9.aarch64
  • microshift-olm-0:4.19.46-202609041024.p0.g59e34c7.assembly.4.19.46.el9.aarch64
  • microshift-ai-model-serving-release-info-0:4.19.46-202609041024.p0.g59e34c7.assembly.4.19.46.el9.noarch
  • microshift-gateway-api-release-info-0:4.19.46-202609041024.p0.g59e34c7.assembly.4.19.46.el9.noarch
  • microshift-greenboot-0:4.19.46-202609041024.p0.g59e34c7.assembly.4.19.46.el9.noarch
  • microshift-low-latency-0:4.19.46-202609041024.p0.g59e34c7.assembly.4.19.46.el9.noarch
  • microshift-multus-release-info-0:4.19.46-202609041024.p0.g59e34c7.assembly.4.19.46.el9.noarch
  • microshift-observability-0:4.19.46-202609041024.p0.g59e34c7.assembly.4.19.46.el9.noarch
  • microshift-olm-release-info-0:4.19.46-202609041024.p0.g59e34c7.assembly.4.19.46.el9.noarch
  • microshift-release-info-0:4.19.46-202609041024.p0.g59e34c7.assembly.4.19.46.el9.noarch
  • microshift-selinux-0:4.19.46-202609041024.p0.g59e34c7.assembly.4.19.46.el9.noarch

Fixed versions or updates

  • No fixed version is stated in this record.

Recommended action

Apply the Red Hat updates listed in the official advisory.

Related vulnerabilities

BlackTree CVE Intelligence
CVE-2026-33814Open CVE report →CVE-2026-42499Open CVE report →

Official publisher evidence

RED HATVERIFIED

Red Hat Security Advisory: Red Hat build of MicroShift 4.19.46 security update

Checked 2 Oct 2026. BlackTree preserves the last verified facts if a later source check is temporarily unavailable.

Open the official publisher source