CVE-2026-40923
Published:April 21, 2026
Updated:May 25, 2026
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.
Affected Packages
github.com/tektoncd/pipeline (GO):
Affected version(s) >=v1.4.0 <v1.6.2Fix Suggestion:
Update to version v1.6.2github.com/tektoncd/pipeline (GO):
Affected version(s) >=v1.0.0 <v1.0.2Fix Suggestion:
Update to version v1.0.2github.com/tektoncd/pipeline (GO):
Affected version(s) >=v1.10.0 <v1.11.1Fix Suggestion:
Update to version v1.11.1github.com/tektoncd/pipeline (GO):
Affected version(s) >=v0.0.0-20190327171839-7c43fbae2816 <v1.11.1Fix Suggestion:
Update to version v1.11.1github.com/tektoncd/pipeline (GO):
Affected version(s) >=v1.7.0 <v1.9.3Fix Suggestion:
Update to version v1.9.3github.com/tektoncd/pipeline (GO):
Affected version(s) >=v1.2.0 <v1.3.4Fix Suggestion:
Update to version v1.3.4Related Resources (4)
Do you need more information?
Contact UsCVSS v4
Base Score:
5.3
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
LOW
User Interaction
NONE
Vulnerable System Confidentiality
LOW
Vulnerable System Integrity
LOW
Vulnerable System Availability
NONE
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
5.4
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
LOW
Integrity
LOW
Availability
NONE
Weakness Type (CWE)
Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
EPSS
Base Score:
0.05