CVE-2026-73266
HIGH
NVD
CVSS Score
7.1
Severity
HIGH
Published
Aug 13, 2026
Vendor
unknown
Description
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.