Description
A flaw was found in the governance-policy-addon-controller component of Red Hat Advanced Cluster Management for Kubernetes. A user with permissions to annotate the namespaced ManagedClusterAddOn resource can override the governance-policy container image. This allows an attacker to run a controlled image with cluster-admin privileges on the managed cluster, leading to arbitrary code execution and privilege escalation.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Red Hat | Red Hat Advanced Cluster Management for Kubernetes 2.11 | — | — |
| Red Hat | Red Hat Advanced Cluster Management for Kubernetes 2.13 | — | — |
| Red Hat | Red Hat Advanced Cluster Management for Kubernetes 2.14 | — | — |
| Red Hat | Red Hat Advanced Cluster Management for Kubernetes 2.15 | — | — |
| Red Hat | Red Hat Advanced Cluster Management for Kubernetes 2.16 | — | — |
| Red Hat | Red Hat Advanced Cluster Management for Kubernetes 2.17 | — | — |
References
- RHSA-2026:60386 vendor-advisory
- RHSA-2026:60387 vendor-advisory
- RHSA-2026:60388 vendor-advisory
- RHSA-2026:60389 vendor-advisory
- RHSA-2026:60390 vendor-advisory
- RHSA-2026:60391 vendor-advisory
- https://access.redhat.com/security/cve/CVE-2026-66793 vdb-entry
- RHBZ#2507538 issue-tracking