THREAT OPS › Threat News › [NVD] CVE-2026-73266 (HIGH 7.1) — 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.
[NVD] CVE-2026-73266 (HIGH 7.1) — 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.
CVE-2026-73266 CVSS: 7.1 HIGH Published: 2026-08-13T17:17:35.713
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
Indicators of compromise
- CVE-2026-73266cve
Original source: https://nvd.nist.gov/vuln/detail/CVE-2026-73266