CVE-2026-71404 json
Rancher: Ownership-less ClusterRole overwrite via attacker-controlled cr-name annotation on GlobalRole
published 2026-09-03 2 mo ago modified 2026-09-18 51 d ago also EUVD-2026-70504
- cvss
- 8.7
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.4%
- EPSS 0.4% chance of exploitation in 30 days, percentile 36%
- public exploits
- 0
- none known
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.
Patch / fix
- SUSE Rancher 2.15.1
- github.com/rancher/rancher#56642 pull request
- github.com/rancher/rancher#56593 pull request
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- total
- Assessed
- 2 mo ago
Exploit prediction
0.42% chance of exploitation in the next 30 days, higher than 36% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 8.7 | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:N/I:H/A:H |
Affected products
- SUSE Rancher
Classification
- Weakness
-
- CWE-639 Authorization Bypass Through User-Controlled Key
References
-
github.com
/rancher/rancher/pull/56642
patch, issue-tracking
-
github.com
/rancher/rancher/pull/56593
patch, issue-tracking
Sources
- CVE List CVE-2026-71404
- NVD CVE-2026-71404
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