Skip to content
CVE PROGRAM SOURCE RECORD7.1 High

CVE-2026-73266

Clusterclaims-controller: confused deputy: tenant-controlled clusterclaim labels propagated to managedcluster, enabling cross-tenant managedclusterset join

Read JSON ↗CVE.org ↗
Status
Published
Published
Updated
Assigning organization
redhat

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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Red Hat multicluster engine for Kubernetes 2.10

Default version status: affected

  • 1787196014 to < *unaffected

Red Hat multicluster engine for Kubernetes 2.11

Default version status: affected

  • 1787239442 to < *unaffected

Red Hat multicluster engine for Kubernetes 2.17

Default version status: affected

  • 1786577950 to < *unaffected

Red Hat multicluster engine for Kubernetes 2.6

Default version status: affected

  • 1787259112 to < *unaffected

Red Hat multicluster engine for Kubernetes 2.8

Default version status: affected

  • 1787259059 to < *unaffected

Red Hat multicluster engine for Kubernetes 2.9

Default version status: affected

  • 1787195995 to < *unaffected

References