RHSA-2026:57801: OpenShift Container Platform 4.21.30 bug fix and security update

Published Aug 25, 2026

Updated

Red Hat OpenShift Container Platform is Red Hat's cloud computing Kubernetes application platform solution designed for on-premise or private cloud deployments.This advisory contains the container images for Red Hat OpenShift Container Platform 4.21.30. See the following advisory for the RPM packages for this release:https://access.redhat.com/errata/RHSA-2026:57456 Space precludes documenting all of the container images in this advisory. See the following Release Notes documentation, which will be updated shortly for this release, for details about these changes:https://docs.redhat.com/en/documentation/openshiftcontainerplatform/4.21/html/releasenotes/

Affected Software

1 affected component

Red Hat OpenShift Container Platform 4.21.30=4.21.30

Remediation

Recommended actions to resolve this vulnerability, in priority order.

Upgrade
Upgrade OpenShift Container Platform 4.21 to a version that resolves this vulnerability.
Fixed in 4.21.30
Compensating control
Use OpenShift CLI (oc) or the web console to check for available updates and ensure the cluster is upgraded to the updated packages and images in the appropriate release channel.

Event History

Aug 25, 2026

Advisory Published

via Red Hat·12:00 AM

Data Sourced

via Red Hat·12:00 AM

RemedyDescriptionAffected Software

Frequently Asked Questions

Which deployment artifacts are provided by this advisory?

This advisory contains container images for Red Hat OpenShift Container Platform 4.21.30. The corresponding RPM packages are provided separately in RHSA-2026:57456.

Where can I find the detailed list of fixes included in this update?

The advisory does not list all changed container images because of space constraints. The OpenShift Container Platform 4.21 release notes are identified as the source for details and will be updated for this release.