Governance-policy-addon-controller: governance-policy-addon-controller: arbitrary container image override via managedclusteraddon annotation enables rce on spoke (Red Hat Red Hat Advanced Cluster Management for Kubernetes 2.11)
At a glance
- Source
- NVD
- EPSS
- EPSS 0.81 % · percentile 57 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- redhat
- NVD status
- Awaiting Analysis
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.
Weaknesses (CWE)
- CWE-20 — Improper Input Validation
References
- https://access.redhat.com/errata/RHSA-2026:60386
- https://access.redhat.com/errata/RHSA-2026:60387
- https://access.redhat.com/errata/RHSA-2026:60388
- https://access.redhat.com/errata/RHSA-2026:60389
- https://access.redhat.com/errata/RHSA-2026:60390
- https://access.redhat.com/errata/RHSA-2026:60391
- https://access.redhat.com/security/cve/CVE-2026-66793
- https://bugzilla.redhat.com/show_bug.cgi?id=2507538
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.1 | HIGH 8.8 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H | redhat |
| CVSS 3.1 | HIGH 8.8 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H | NVD · secalert@redhat.com (Secondary) |
European references
- ENISA EUVD · EUVD-2026-60951
- GCVE · GCVE-0-2026-66793
Affected products
| Product | Versions |
|---|---|
| Red Hat · Red Hat Advanced Cluster Management for Kubernetes 2.11 | unaffected 1787683327 < * |
| Red Hat · Red Hat Advanced Cluster Management for Kubernetes 2.13 | unaffected 1787259078 < * |
| Red Hat · Red Hat Advanced Cluster Management for Kubernetes 2.14 | unaffected 1787080755 < * |
| Red Hat · Red Hat Advanced Cluster Management for Kubernetes 2.15 | unaffected 1787238535 < * |
| Red Hat · Red Hat Advanced Cluster Management for Kubernetes 2.16 | unaffected 1787080753 < * |
| Red Hat · Red Hat Advanced Cluster Management for Kubernetes 2.17 | unaffected 1787227696 < * |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |