CVE-2026-71404

High

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.

SeverityHigh

CVSS8.7

Exploit probability—

Product

Suse Rancher

PublishedSep 3, 2026

First seenSep 3, 2026

Weakness typeCWE-639Authorization bypass through user-controlled key

How to fix

Update

suse rancher2.15.1 or later

Patches

Affected products

Product	Affected versions	Fixed in
suse rancher	v < 2.15.1	2.15.1

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