Critical [CVE-2026-66792] IsClusterAdmin trusts user-settable annotations on managed clusters
This critical-severity Red Hat Linux advisory covers CVE-2026-66792 affecting Multicluster Global Hub, Red Hat Advanced Cluster Management for Kubernetes 2, Red Hat OpenShift Container Platform 4.
Android app · Google Play
Monitor future Red Hat Linux CVEs from your phone.
Choose a whole vendor or a precise platform, then receive matching security advisories by phone notification, email, or both. Coverage follows 32 official vendor sources and 160+ reviewed platform categories.
Summary
IsClusterAdmin() trusts user-settable annotations on managed clusters. Red Hat rates this important (CVSS 9.9).
Weakness: CWE-863.
Affected products named by the advisory: Multicluster Global Hub; Red Hat Advanced Cluster Management for Kubernetes 2; Red Hat OpenShift Container Platform 4.
Affected versions
No affected-version range was extracted from the source record. The vendor advisory is authoritative — check it before change work.
Official advisory · high-confidence parse· fetched 3 hours ago·verify at source
Fixed versions
No fixed release is recorded yet. That does not prove no patch exists — confirm against the vendor advisory.
Official advisory · high-confidence parse· fetched 3 hours ago·verify at source
Mitigation checklist
- Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.
Official advisory · high-confidence parse· fetched 3 hours ago·verify at source
Discussion(0)
No comments yet. Share field notes, upgrade gotchas, or questions — verify against the vendor advisory before acting on community advice.
Sign in to join the discussion.