Red HatCVE-2026-66793
Red Hat governance-policy-addon-controller: code execution
High8.8CVE-2026-66793 · Published Aug 18, 2026 · updated Aug 27, 2026
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 versions
The source does not list versions here. See the source advisory for affected products and fixes.
Details and references
- CVSS 3.1
- CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Severity from
- the vendor (its own CVE record or advisory)
- Weakness
- CWE-20
- www.cve.org/CVERecord?id=CVE-2026-66793
- nvd.nist.gov/vuln/detail/CVE-2026-66793
- access.redhat.com/errata/RHSA-2026:60386
- access.redhat.com/errata/RHSA-2026:60387
- access.redhat.com/errata/RHSA-2026:60388
- access.redhat.com/errata/RHSA-2026:60389
- access.redhat.com/errata/RHSA-2026:60390
- access.redhat.com/errata/RHSA-2026:60391
- access.redhat.com/security/cve/CVE-2026-66793
- bugzilla.redhat.com/show_bug.cgi?id=2507538
More Red Hat advisories
All Red Hat| Date | Advisory | Severity | Fixed in |
|---|---|---|---|
| Aug 18 | A flaw was found in the legacy client-initiated account-linking endpoint of... | High7.3 | No fix yet |
| Aug 18 | Red Hat Advanced Cluster Management for Kubernetes 2: secrets in logs | Medium6.5 | No fix yet |
| Aug 18 | Red Hat Multicluster Engine for Kubernetes: information disclosure | High8.7 | No fix yet |
| Aug 18 | Red Hat Advanced Cluster Management for Kubernetes 2: information disclosure | Medium5.4 | No fix yet |
| Aug 18 | Red Hat Advanced Cluster Management: improper privilege management | Medium5.8 | No fix yet |
| Aug 18 | Red Hat Advanced Cluster Management for Kubernetes 2: code execution | Medium4.4 | No fix yet |