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Vulnerability details

CVE-2026-73267

Clusterclaims-controller: managedcluster deletion keyed solely on clusterclaim.spec.namespace with no local ownership check

CVSS 3.1
7.7High

Official 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.

CVSS scores

ScoreVersionSourceVector
7.7High 3.1 CVEProject cvelistV5 (CNA) (redhat) CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H

Affected products

VendorProductVersionsSource
No product information recorded.

References and advisories

8
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Details

Published
2026-08-21
Last updated
2026-09-29
State
Published
Assigner (CNA)
redhat

Exploit prediction (EPSS)

0.62%
Probability of exploitation in 30 days
50.2%
Percentile (among all CVEs)

SSVC assessment (CISA)

Automatable
No
Exploitation
None
Technical impact
Partial

Weaknesses (CWE)

  • CWE-602
    Client-Side Enforcement of Server-Side Security