CVE-2026-71404 (GCVE-0-2026-71404)
Vulnerability from cvelistv5 – Published: 2026-09-03 14:51 – Updated: 2026-09-03 15:07
VLAI
EPSS
VEX
Title
Rancher: Ownership-less ClusterRole overwrite via attacker-controlled cr-name annotation on GlobalRole
Summary
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.
Severity
8.7 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-03 15:06 UTC
CWE
- CWE-639 - Authorization bypass through User-Controlled key
Assigner
References
2 references
Impacted products
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