CVE-2026-40923

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. 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.

5.4 /10

CVSS v3 : MEDIUM

V3 Legend

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

22 May 2026, 17:16

Type Values Removed Values Added
Summary (en) 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. (en) 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.

27 Apr 2026, 18:07

Type Values Removed Values Added
First Time Linuxfoundation
Linuxfoundation tekton Pipelines
References () https://github.com/tektoncd/pipeline/releases/tag/v1.11.1 - () https://github.com/tektoncd/pipeline/releases/tag/v1.11.1 - Release Notes
References () https://github.com/tektoncd/pipeline/security/advisories/GHSA-rx35-6rhx-7858 - () https://github.com/tektoncd/pipeline/security/advisories/GHSA-rx35-6rhx-7858 - Vendor Advisory
CPE cpe:2.3:a:linuxfoundation:tekton_pipelines:*:*:*:*:*:go:*:*

21 Apr 2026, 21:16

Type Values Removed Values Added
New CVE
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')