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Medium severity5.4NVD Advisory· Published Apr 21, 2026· Updated May 22, 2026

CVE-2026-40923

CVE-2026-40923

Description

Tekton Pipelines project provides k8s-style resources for declaring CI/CD-style pipelines. Starting in version 1.0.0 and prior to versions 1.0.2, 1.3.4, 1.6.2, 1.9.3, and 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. Versions 1.0.2, 1.3.4, 1.6.2, 1.9.3, and 1.11.1 fix the issue.

AI Insight

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Affected packages

Versions sourced from the GitHub Security Advisory.

PackageAffected versionsPatched versions
github.com/tektoncd/pipelineGo
>= 1.10.0, < 1.11.11.11.1
github.com/tektoncd/pipelineGo
>= 1.7.0, < 1.9.31.9.3
github.com/tektoncd/pipelineGo
>= 1.4.0, < 1.6.21.6.2
github.com/tektoncd/pipelineGo
>= 1.2.0, < 1.3.41.3.4
github.com/tektoncd/pipelineGo
>= 1.0.0, < 1.0.21.0.2

Affected products

141

Patches

Vulnerability mechanics

References

4

News mentions

0

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