CVE-2026-71404

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

Published Sep 3, 2026 CVSS 3.1 · 8.7 High EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
CPEs cpe:2.3:a:suse:rancher:*:*:*:*:*:*:*:*
Type Values Removed Values Added
First Time appeared Suse
Suse rancher
Vendors & Products Suse
Suse rancher
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
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.
Title Rancher: Ownership-less ClusterRole overwrite via attacker-controlled cr-name annotation on GlobalRole
Weaknesses CWE-639
References
Metrics cvssV3_1

{'score': 8.7, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:N/I:H/A:H'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
suse
Published
Updated
Sep 3, 2026, 3:07 PM
Reserved
Aug 6, 2026, 11:38 AM
Status
Analyzed
Published
Sep 3, 2026, 3:17 PM
Modified
Sep 18, 2026, 2:58 PM