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Critical · 9.9 CVE-2026-73269 EUVD-2026-57439GHSA-h2w9-5qx3-frqq

Cluster-curator-controller: cluster-curator-controller: tenant-controllable trigger creates clusterrolebinding granting cluster-wide secrets access to namespace-local sa

Published Aug 12, 2026 · Updated Sep 29, 2026 · Assigned by redhat

Description

A flaw was found in the cluster-curator-controller component. A local user, by creating a ClusterCurator resource with a specific naming convention, can trigger the creation of a cluster-scoped ClusterRoleBinding. This allows the user to escalate their privileges from namespace-local access to cluster-wide control. This privilege escalation grants broad permissions, including the ability to access and manipulate secrets, manage cluster actions, and delete hosted clusters or node pools.

Affected products

VendorProductAffectedFixed
Red Hat multicluster engine for Kubernetes 2.10 — —
Red Hat multicluster engine for Kubernetes 2.11 — —
Red Hat multicluster engine for Kubernetes 2.17 — —
Red Hat multicluster engine for Kubernetes 2.6 — —
Red Hat multicluster engine for Kubernetes 2.8 — —
Red Hat multicluster engine for Kubernetes 2.9 — —

References