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CVE-2026-71404— Rancher: Ownership-less ClusterRole overwrite via attacker-controlled cr-name annotation on GlobalRole

Quick assessment

Affected
SUSE Rancher
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

SUSE rancher是德国SUSE公司开源的一款一套容器管理平台。 SUSE rancher 2.15.1之前版本存在授权问题漏洞，该漏洞源于GlobalRole控制器在未验证所有权的情况下从用户可设置的authz.management.cattle.io/cr-name注释派生ClusterRole名称并覆盖其规则，可能导致具有委派GlobalRole创建或更新权限的用户将注释指向任意现有ClusterRole（如cluster-admin），撤销绑定到该角色的所有主体的权限，且该更改在恶意Glob

CVSS 8.7 · High EPSS 0.42% · P37

Possible ATT&CK Techniques 1 AI

T1078 · Valid Accounts

Affected Version Matrix 1

VendorProduct Version RangeStatus
SUSE Rancher < 2.15.1 affected
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I. Basic Information for CVE-2026-71404

Vulnerability Information
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Vulnerability Title
Rancher: Ownership-less ClusterRole overwrite via attacker-controlled cr-name annotation on GlobalRole
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:N/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
通过用户控制密钥绕过授权机制
Source: CVE Program / CVE List V5
Vulnerability Title
SUSE rancher 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
SUSE rancher是德国SUSE公司开源的一款一套容器管理平台。 SUSE rancher 2.15.1之前版本存在授权问题漏洞，该漏洞源于GlobalRole控制器在未验证所有权的情况下从用户可设置的authz.management.cattle.io/cr-name注释派生ClusterRole名称并覆盖其规则，可能导致具有委派GlobalRole创建或更新权限的用户将注释指向任意现有ClusterRole（如cluster-admin），撤销绑定到该角色的所有主体的权限，且该更改在恶意Glob
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
SUSE Rancher 0 ~ 2.15.1 -

II. Public POCs for CVE-2026-71404

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III. Intelligence Information for CVE-2026-71404

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Same Patch Batch · SUSE · 2026-09-03 · 6 CVEs total

CVE-2026-75033 7.7 HIGH Rancher: Cross-Cluster Secret Leakage via Namespace projectId Annotation Spoofing
CVE-2026-75035 7.7 HIGH Rancher: ext.cattle.io/v1 Token store: cross-user token disclosure via label-selector scop
CVE-2026-75034 7.4 HIGH Rancher: SAML Assertion Replay
CVE-2026-71403 6.1 MEDIUM Rancher: Identity-field mutation in /v3/users allows account hijack via principal rebind
CVE-2026-75036 5.3 MEDIUM Fleet: DNS exfiltration via Sprig getHostByName in fleet.yaml Helm template preprocessing

IV. Related Vulnerabilities

Same product: Rancher
Same vendor: SUSE
Same weakness: CWE-639