A flaw was found in the governance-policy-addon-controller component of Red Hat Advanced Cluster Management for Kubernetes. (CVE-2026-66793)
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.
A flaw was found in the governance-policy-addon-controller component of Red Hat Advanced Cluster Management for Kubernetes. (CVE-2026-66793)
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.
CVSS v3.1
Score 8.8high
Weaknesses
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-xh6j-xcjj-j38g
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-66793"]
- Ecosystems
- []
- Database Specific Severity
- HIGH
- Cvss Version
- 3.1
Patch Information
Threat ID: 6a9053feacd9273b49696e2c
Added to database: 08/27/2026, 15:13:02 UTC
Last updated: 08/27/2026, 22:52:13 UTC
Views: 2
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