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

CVE-2026-71404

Rancher: Ownership-less ClusterRole overwrite via attacker-controlled cr-name annotation on GlobalRole PUBLISHED

Description (CNA)

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.

Affected (CNA)

Vendor / product	Versions
SUSE / Rancher	affected 0 before 2.15.1

CWE

CWE-639

References

https://github.com/rancher/rancher/pull/56642
https://github.com/rancher/rancher/pull/56593

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.