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.

CVSS v3 8.7 HIGH

8.7^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.3 / Impact : 5.8

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required HIGH

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact HIGH

Availability Impact HIGH

Scope CHANGED

References

Link	Resource
https://github.com/rancher/rancher/pull/56593	Issue Tracking Patch
https://github.com/rancher/rancher/pull/56642	Issue Tracking Patch

Configurations

Configuration 1 (hide)

cpe:2.3:a:suse:rancher:*:*:*:*:*:*:*:*

History

18 Sep 2026, 14:58

Type	Values Removed	Values Added
CPE		cpe:2.3:a:suse:rancher::::::::
First Time		Suse Suse rancher
References	~~() https://github.com/rancher/rancher/pull/56593 -~~	() https://github.com/rancher/rancher/pull/56593 - Issue Tracking, Patch
References	~~() https://github.com/rancher/rancher/pull/56642 -~~	() https://github.com/rancher/rancher/pull/56642 - Issue Tracking, Patch

Information

Published : 2026-09-03 15:17

Updated : 2026-09-18 14:58

NVD link : CVE-2026-71404

Mitre link : CVE-2026-71404

CVE.ORG link : CVE-2026-71404

JSON object : View

Products Affected

suse

rancher

CWE

CWE-639

Authorization Bypass Through User-Controlled Key

{"id": "CVE-2026-71404", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-71404", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "version": "2.0.3", "timestamp": "2026-09-03T15:06:03.098792Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "meissner@suse.de", "cvssData": {"scope": "CHANGED", "version": "3.1", "baseScore": 8.7, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:N/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "HIGH", "confidentialityImpact": "NONE"}, "impactScore": 5.8, "exploitabilityScore": 2.3}]}, "affected": [{"source": "meissner@suse.de", "affectedData": [{"repo": "https://github.com/rancher/rancher", "vendor": "SUSE", "product": "Rancher", "versions": [{"status": "affected", "version": "0", "lessThan": "2.15.1", "versionType": "semver"}], "defaultStatus": "unaffected"}]}], "published": "2026-09-03T15:17:32.327", "references": [{"url": "https://github.com/rancher/rancher/pull/56593", "tags": ["Issue Tracking", "Patch"], "source": "meissner@suse.de"}, {"url": "https://github.com/rancher/rancher/pull/56642", "tags": ["Issue Tracking", "Patch"], "source": "meissner@suse.de"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Secondary", "source": "meissner@suse.de", "description": [{"lang": "en", "value": "CWE-639"}]}], "descriptions": [{"lang": "en", "value": "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.\n\n\nThis issue affects Rancher: before 2.15.1."}], "lastModified": "2026-09-18T14:58:34.653", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:suse:rancher:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "C911F079-FC7A-48EB-9A06-C86AFC6FC1AD", "versionEndExcluding": "2.15.1"}], "operator": "OR"}]}], "sourceIdentifier": "meissner@suse.de"}