CVE-2026-73266

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.

Score
CVSS 3.1 7.1 High
Status
Awaiting Analysis - secalert@redhat.com
Published
2026-08-13
Last modified
2026-09-29
Weaknesses
CWE-441

Affected products

References

 
 
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