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 ove…
Published: 2026-09-03 · CVSS: 8.7 · CVSS 3.1
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 point the annotation at any existing ClusterRole, such as `cluster-admin`, and revoke the permissions of every principal bound to it. The change persists after the malicious GlobalRole is deleted. This issue affects Rancher: before 2.15.1.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7