What is CVE-2026-71404?

CVE-2026-71404 is a high-severity vulnerability, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 8.7/10. Published 2026-09-03.

How severe is CVE-2026-71404?

High severity. CVSS v3 base score is 8.7 out of 10.

CVE-2026-71404

CVE-2026-71404

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.

Vulnerability class: IDOR (Insecure Direct Object Reference)

CVSS v3 metric

CVSS v3 base score 8.7 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:N/I:H/A:H.

Weakness classification (CWE)

CWE-639 — Authorization Bypass Through User-Controlled Key

References

Frequently asked questions

What is CVE-2026-71404?: CVE-2026-71404 is a high-severity vulnerability, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 8.7/10. Published 2026-09-03.
How severe is CVE-2026-71404?: High severity. CVSS v3 base score is 8.7 out of 10.