Description (CNA)
A flaw was found in the clusterclaims-controller component of Multicluster Engine (MCE). An authenticated tenant can exploit this vulnerability by manipulating ClusterClaim labels. This allows the tenant to force a cluster to join a ManagedClusterSet belonging to another tenant. Such unauthorized access could enable the injection of policies and workloads into other tenants' clusters.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Red Hat / multicluster engine for Kubernetes 2.10 | unaffected 1787196014 before * |
| Red Hat / multicluster engine for Kubernetes 2.11 | unaffected 1787239442 before * |
| Red Hat / multicluster engine for Kubernetes 2.17 | unaffected 1786577950 before * |
| Red Hat / multicluster engine for Kubernetes 2.6 | unaffected 1787259112 before * |
| Red Hat / multicluster engine for Kubernetes 2.8 | unaffected 1787259059 before * |
| Red Hat / multicluster engine for Kubernetes 2.9 | unaffected 1787195995 before * |
CWE
CWE-441
References
- https://access.redhat.com/errata/RHSA-2026:59556
- https://access.redhat.com/errata/RHSA-2026:59557
- https://access.redhat.com/errata/RHSA-2026:59558
- https://access.redhat.com/errata/RHSA-2026:59559
- https://access.redhat.com/errata/RHSA-2026:59579
- https://access.redhat.com/errata/RHSA-2026:59593
- https://access.redhat.com/security/cve/CVE-2026-73266
- https://bugzilla.redhat.com/show_bug.cgi?id=2514217
ADP enrichment
No English description supplied.
No references supplied.