CVE-2026-40161
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, the Tekton Pipelines git resolver in API mode sends the system-configured Git API token to a user-controlled serverURL when the user omits the token parameter. A tenant with TaskRun or PipelineRun create permission can exfiltrate the shared API token (GitHub PAT, GitLab token, etc.) by pointing serverURL to an attacker-controlled endpoint. 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) >=v1.10.0 <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) >=v1.4.0 <v1.6.2Fix Suggestion:
Update to version v1.6.2github.com/tektoncd/pipeline (GO):
Affected version(s) >=v1.2.0 <v1.3.4Fix Suggestion:
Update to version v1.3.4github.com/tektoncd/pipeline (GO):
Affected version(s) >=v1.0.0 <v1.0.2Fix Suggestion:
Update to version v1.0.2Related Resources (5)
Do you need more information?
Contact UsCVSS v4
Base Score:
8.3
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
LOW
User Interaction
NONE
Vulnerable System Confidentiality
HIGH
Vulnerable System Integrity
NONE
Vulnerable System Availability
NONE
Subsequent System Confidentiality
HIGH
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
7.7
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
CHANGED
Confidentiality
HIGH
Integrity
NONE
Availability
NONE
Weakness Type (CWE)
Insertion of Sensitive Information Into Sent Data
EPSS
Base Score:
0.04