CVE-2026-71404 Rancher: Ownership-less ClusterRole overwrite via attacker-controlled cr-name annotation on GlobalRole
Attackers with GlobalRole permissions can overwrite arbitrary ClusterRoles via annotations, revoking permissions for all bound principals.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-71404?
CVE-2026-71404 is a high-severity vulnerability in SUSE Rancher, published on 3 Sep 2026. An attacker needs administrator access to exploit it, with no action from the victim.
Official 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.
Weakness: CWE-639
Which versions are affected by CVE-2026-71404?
It affects 1 product.
Products include Suse Rancher.
How do I fix CVE-2026-71404?
No fix has been published for CVE-2026-71404 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-71404 being exploited?
There is no known exploitation of CVE-2026-71404 in the wild and no public exploit code.
Other vulnerabilities in SUSE Rancher
- CVE-2023-22647 Rancher vulnerable to Privilege Escalation via manipulation of Secrets
- CVE-2023-22651 Rancher Webhook is misconfigured during upgrade process
- CVE-2022-43757 Rancher: Exposure of sensitive fields
- CVE-2021-36782 Rancher: Plaintext storage and exposure of credentials in Rancher API and cluster.management.cattle.io object
- CVE-2021-36783 Rancher: Failure to properly sanitize credentials in cluster template answers