Vulnerability in ManagedCluster Resource Deletion in Multicluster Engine by Red Hat
CVE-2026-73267

7.7HIGH

Key Information:

Vendor

Red Hat
Status
Multicluster Engine For Kubernetes
Vendor
CVE Published:
21 August 2026

What is CVE-2026-73267?

A flaw exists in the clusterclaims-controller of Red Hat's Multicluster Engine where a tenant with standard permissions can exploit the spec.namespace field. This manipulation allows unauthorized users to delete any ManagedCluster, including the hub's local-cluster or resources belonging to other tenants, due to a lack of ownership verification. Consequently, this can lead to significant service disruptions by enabling deletion of critical ManagedClusters.

References

https://access.redhat.com/security/cve/CVE-2026-73267
vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2514218
issue-trackingx_refsource_REDHAT

CVSS V3.1

Score:
7.7
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.