Is CVE-2026-73267 being exploited?

No public exploit is currently tracked.

How severe is CVE-2026-73267?

CVE-2026-73267 has a CVSS v3 severity of HIGH (7.7).

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CVE-2026-73267

Description

A flaw was found in the clusterclaims-controller component of multicluster engine (MCE). A tenant with standard permissions to create and delete ClusterClaim resources can exploit this by manipulating the `spec.namespace` field. This allows the tenant to specify and delete any ManagedCluster, including the hub's local-cluster or other tenants' clusters, due to a missing ownership check. This vulnerability can lead to a denial of service by enabling unauthorized deletion of ManagedClusters.