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CVE-2026-104623— Authorization bypass on the local cluster shell endpoint allows an unauthorized Rancher user to obtain a shell pod on the management cluster

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 Manager 2.15.0 至 2.15.3、2.14.0 至 2.14.7、2.13.0 至 2.13.11、2.12.0 至 2.12.15、2.11.0 至 2.11.19，以及可能的更早版本中，本地（管理）集群 Shell 功能的授权处理存在安全漏洞。为保护该功能而引入的授权检查并未应用于所有可访问该功能的 API 路由，因此某些替代形式的请求能够绕过访问检查并直接到达 Shell 处理程序。这可能导致任何已认证用户在管理集群中运行 Pod。

CVSS 6.3 · Medium
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I. Basic Information for CVE-2026-104623

Vulnerability Information
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Vulnerability Title
Authorization bypass on the local cluster shell endpoint allows an unauthorized Rancher user to obtain a shell pod on the management cluster
Source: CVE Program / CVE List V5
Vulnerability Description
A security vulnerability exists in the authorization handling for the local (management) cluster shell feature of SUSE Rancher Manager 2.15.0 up to 2.15.3, 2.14.0 up to 2.14.7, 2.13.0 up to 2.13.11, 2.12.0 up to 2.12.15, 2.11.0 up to 2.11.19 and possible older versions. The authorization check that was introduced to protect this feature was not applied to every API route that can reach it, so an alternative request form reached the shell handler without the access check being evaluated. This could allow any authenticated users to run a pod on the management cluster.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
使用欺骗进行的认证绕过
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
SUSE Rancher 2.15.0 ~ 2.15.3 -

II. Public POCs for CVE-2026-104623

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III. Intelligence Information for CVE-2026-104623

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Other References for CVE-2026-104623 (1)

IV. Related Vulnerabilities

Same product: Rancher
Same vendor: SUSE
Same weakness: CWE-290