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.
Metrics
Affected Vendors & Products
References
History
Thu, 13 Aug 2026 20:30:00 +0000
| Type | Values Removed | Values Added |
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| First Time appeared |
Redhat multicluster Engine For Kubernetes
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| Vendors & Products |
Redhat multicluster Engine For Kubernetes
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Thu, 13 Aug 2026 17:00:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| 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. | |
| Title | Clusterclaims-controller: clusterclaims-controller: tenant-controlled clusterclaim labels propagated to managedcluster enabling cross-tenant managedclusterset join | |
| First Time appeared |
Redhat
Redhat multicluster Engine |
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| Weaknesses | CWE-441 | |
| CPEs | cpe:/a:redhat:multicluster_engine | |
| Vendors & Products |
Redhat
Redhat multicluster Engine |
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| References |
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| Metrics |
cvssV3_1
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Status: PUBLISHED
Assigner: redhat
Published:
Updated: 2026-08-13T16:36:45.097Z
Reserved: 2026-08-11T17:22:38.645Z
Link: CVE-2026-73266
No data.
Status : Received
Published: 2026-08-13T17:17:35.713
Modified: 2026-08-13T17:17:35.713
Link: CVE-2026-73266
No data.
OpenCVE Enrichment
Updated: 2026-08-13T20:15:03Z