RHSA-2026:13548 - Security Advisory

Topic

Red Hat Advanced Cluster Management for Kubernetes 2.15 General
Availability release images, which add new features and enhancements, bug
fixes, and updated container images.

Description

Red Hat Advanced Cluster Management for Kubernetes 2.15 images

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/2.15/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-20743 - alertmanager-clientca-metric configmap not updated after cert rotation, causes TargetDown alert
• ACM-26173 - receive hashring is never updated on scaling due to missing permissions
• ACM-27834 - Observability tries to determine if a cluster is OCP too early in deployment
• ACM-32930 - Thanos Compact: delete empty directories on non-standard S3 providers
• ACM-29842 - Upgrading from ACM 2.13 to 2.15.1 argocd sync fails with "unauthorized change to /cpuArchitecture"

CVEs

• CVE-2025-13465
• CVE-2025-58183
• CVE-2025-61726
• CVE-2026-22029
• CVE-2026-25639
• CVE-2026-29063
• CVE-2026-32285
• CVE-2026-33186
• CVE-2026-33487
• CVE-2026-40175
• CVE-2026-4645

References

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