VULNERABILITY INTELLIGENCE
CVE-2026-73266
CVSS score7.1 HIGH
EPSS probability0.35%
CISA KEVNot currently listed
Published2026-08-13
Last modified2026-09-29
CVSS vectorCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:L/A:N
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.
Weakness classification
- secalert@redhat.com: CWE-441