Tekton Pipelines: VolumeMount path restriction bypass via missing filepath.Clean in /tekton/ check

Tekton Pipelines project provides k8s-style resources for declaring CI/CD-style pipelines. Prior to 1.11.1, a validation bypass in the VolumeMount path restriction allows mounting volumes under restricted /tekton/ internal paths by using .. path traversal components. The restriction check uses strings.HasPrefix without filepath.Clean, so a path like /tekton/home/../results passes validation but resolves to /tekton/results at runtime. This vulnerability is fixed in 1.11.1.

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N

对路径名的限制不恰当(路径遍历)

Tekton Pipelines 路径遍历漏洞

Tekton Pipelines是Tekton开源的一个云原生管道。 Tekton Pipelines 1.11.1之前版本存在路径遍历漏洞，该漏洞源于VolumeMount路径限制存在验证绕过，允许通过..路径遍历组件将卷挂载到受限制的/tekton/内部路径下。

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