CVE-2026-71404

Published: Sep 3, 2026Modified: Sep 8, 2026

8.7

Vector

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:N/I:H/A:H

Exploitability: 2.3 / Impact: 5.8

Source: meissner@suse.de (Secondary)

Description

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.

Related CWEs

CWE-639

Authorization Bypass Through User-Controlled Key

The system's authorization functionality does not prevent one user from gaining access to another user's data or record by modifying the key value identifying the data.

References (2)

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

Source: meissner@suse.de

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

Source: meissner@suse.de

Timeline

No history available yet.