CVE-2026-66793
HIGH
NVD
CVSS Score
8.8
Severity
HIGH
Published
Aug 18, 2026
Vendor
unknown
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.