CVE-2026-10090 Multicluster-operators-subscription: multicluster-operators-subscription: namespace edit user can deploy cluster-scoped clusterrolebinding and become cluster-admin via application subscription

A flaw was found in the Application Subscription controller multicluster-operators-subscription of Red Hat Advanced Cluster Management for Kubernetes ACM. A user with namespace-scoped "edit" privileges in an ACM hub namespace can create a Channel resource pointing to a Helm repository they contro...

CVE-2026-10090

The CVE concerns Red Hat ACM’s multicluster-operators-subscription: a namespace-scoped edit user in the ACM hub can create a Channel to a Helm repo they control and a Subscription referencing it. The app-subscription controller then fetches and applies the Helm chart with its own elevated authori...