CVE-2026-40923

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.

CVSS v3 5.4 MEDIUM

5.4^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 2.5

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/tektoncd/pipeline/releases/tag/v1.11.1	Release Notes
https://github.com/tektoncd/pipeline/security/advisories/GHSA-rx35-6rhx-7858	Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:linuxfoundation:tekton_pipelines:*:*:*:*:*:go:*:*

History

No history.

Information

Published : 2026-04-21 21:16

Updated : 2026-06-17 10:45

NVD link : CVE-2026-40923

Mitre link : CVE-2026-40923

CVE.ORG link : CVE-2026-40923

JSON object : View

Products Affected

linuxfoundation

tekton_pipelines

CWE

CWE-22

Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

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