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CVE-2026-40923

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CVE-2026-40923

Published: Apr 21, 2026

Modified: May 22, 2026

PUBLISHED

CVSS v3.1

5.4

MEDIUM

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.

VendorProductVersions

tektoncd

pipeline

affected
>= 1.0.0, < 1.0.2
affected
>= 1.2.0, < 1.3.4
affected
>= 1.4.0, < 1.6.2
affected
>= 1.7.0, < 1.9.3
affected
>= 1.10.0, < 1.11.1

Weaknesses (CWE)

CWE-22

CVSS v3.1 Details

CVSS v3.1 Vector

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

Low

Availability

None

References

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