RHSA-2026:67538 - Security Advisory

Topic

Red Hat Advanced Cluster Management for Kubernetes v2.11 general availability release images, which provide security fixes, bug fixes, and updated container images.

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 links in the References section.

Description

Red Hat Advanced Cluster Management for Kubernetes provides the
capabilities to address common challenges that administrators and site
reliability engineers face as they work across a range of public and
private cloud environments. Clusters and applications are all visible and
managed from a single console—with security policy built in.

This advisory contains the container images for Red Hat Advanced Cluster
Management for Kubernetes, which add new features and enhancements, bug
fixes, and updated container images. See the following
Release Notes documentation, which will be updated shortly for this
release, for additional details about this release:

https://docs.redhat.com/en/documentation/red_hat_advanced_cluster_management_for_kubernetes/2.11/html-single/release_notes/index#acm-release-notes

Solution

Before you apply this update, make sure all previously released errata
that are relevant to your system are applied.

For details on how to apply this update, refer to:

https://access.redhat.com/articles/11258

Affected Products

• Red Hat Advanced Cluster Management for Kubernetes

Fixes

• ACM-44191 - ManagedClusterImageRegistry (MCIR) image override not applied to search-collector addon since 2.17.1 (regression from CVE-2026-71471/CVE-2026-71473 fix)

CVEs

• CVE-2026-27136
• CVE-2026-41178
• CVE-2026-42151
• CVE-2026-42154
• CVE-2026-42502
• CVE-2026-48586
• CVE-2026-55969
• CVE-2026-56852
• CVE-2026-66780
• CVE-2026-71556
• CVE-2026-73646

References

• https://access.redhat.com/security/updates/classification/
• https://access.redhat.com/security/updates/classification/#important