CVE-2026-71404 Rancher: Ownership-less ClusterRole overwrite via attacker-controlled cr-name annotation on GlobalRole

A flaw was found in Rancher Manager. The GlobalRole controller derived the target ClusterRole name from the user-settable authz.management.cattle.io/cr-name annotation and overwrote that object's rules without verifying ownership. A user with delegated GlobalRole create or update permission could...