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CVE-2026-41050— Helm impersonation bypass of `RESTClientGetter` retains `cluster-admin` during template rendering

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.

Fleet是Fleet Device Management开源的一个设备管理平台，支持多种操作系统和设备，帮助 IT 和安全团队进行设备管理、漏洞报告、MDM 等操作。 Fleet存在安全漏洞，该漏洞源于Helm部署器在两个代码路径中未完全应用ServiceAccount模拟，允许对Fleet监控仓库具有git推送权限的租户读取每个下游集群目标GitRepo中任何命名空间的秘密。

CVSS 9.9 · Critical EPSS 0.44% · P36

Possible ATT&CK Techniques 1 AI

T1528 · Steal Application Access Token

Affected Version Matrix 5

VendorProduct Version RangeStatus
SUSE Rancher 0.15.0< 0.15.1 affected
0.14.0< 0.14.5 affected
0.13.0< 0.13.10 affected
0.12.0< 0.12.14 affected
0.11.0< 0.11.13 affected
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I. Basic Information for CVE-2026-41050

Vulnerability Information
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Vulnerability Title
Helm impersonation bypass of `RESTClientGetter` retains `cluster-admin` during template rendering
Source: CVE Program / CVE List V5
Vulnerability Description
Fleet's Helm deployer did not fully apply ServiceAccount impersonation in two code paths, allowing a tenant with git push access to a Fleet-monitored repository to read secrets from any namespace on every downstream cluster targeted by their `GitRepo`.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制不正确
Source: CVE Program / CVE List V5
Vulnerability Title
Fleet 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Fleet是Fleet Device Management开源的一个设备管理平台，支持多种操作系统和设备，帮助 IT 和安全团队进行设备管理、漏洞报告、MDM 等操作。 Fleet存在安全漏洞，该漏洞源于Helm部署器在两个代码路径中未完全应用ServiceAccount模拟，允许对Fleet监控仓库具有git推送权限的租户读取每个下游集群目标GitRepo中任何命名空间的秘密。
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 0.15.0 ~ 0.15.1 -

II. Public POCs for CVE-2026-41050

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III. Intelligence Information for CVE-2026-41050

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Vendor Advisories for CVE-2026-41050 (1)

Same Patch Batch · SUSE · 2026-05-13 · 3 CVEs total

CVE-2026-25705 8.4 HIGH Rancher Extensions have arbitrary file access via path traversal
CVE-2026-41051 5.0 MEDIUM csync2 uses insecure temporary directories when compiled with C99 or later

IV. Related Vulnerabilities

Same product: Rancher
Same vendor: SUSE
Same weakness: CWE-863

V. Comments for CVE-2026-41050

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