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.

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Advisories
Source ID Title
Github GHSA Github GHSA GHSA-wjxp-xrpv-xpff Tekton Pipelines: Git resolver API mode leaks system-configured API token to user-controlled serverURL
Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

Thu, 21 May 2026 21:45:00 +0000

Type Values Removed Values Added
Description Tekton Pipelines project provides k8s-style resources for declaring CI/CD-style pipelines. From 1.0.0 to 1.10.0, 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. 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.

Fri, 24 Apr 2026 21:00:00 +0000

Type Values Removed Values Added
First Time appeared Linuxfoundation
Linuxfoundation tekton Pipelines
Weaknesses NVD-CWE-noinfo
CPEs cpe:2.3:a:linuxfoundation:tekton_pipelines:*:*:*:*:*:go:*:*
Vendors & Products Linuxfoundation
Linuxfoundation tekton Pipelines

Fri, 24 Apr 2026 00:15:00 +0000

Type Values Removed Values Added
Weaknesses CWE-918
References
Metrics threat_severity

None

threat_severity

Moderate


Wed, 22 Apr 2026 00:00:00 +0000

Type Values Removed Values Added
First Time appeared Tektoncd
Tektoncd pipeline
Vendors & Products Tektoncd
Tektoncd pipeline
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Tue, 21 Apr 2026 16:45:00 +0000

Type Values Removed Values Added
Description Tekton Pipelines project provides k8s-style resources for declaring CI/CD-style pipelines. From 1.0.0 to 1.10.0, 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.
Title Tekton Pipelines: Git resolver API mode leaks system-configured API token to user-controlled serverURL
Weaknesses CWE-201
References
Metrics cvssV3_1

{'score': 7.7, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-05-21T21:20:13.227Z

Reserved: 2026-04-09T19:31:56.014Z

Link: CVE-2026-40161

cve-icon Vulnrichment

Updated: 2026-04-21T17:41:34.381Z

cve-icon NVD

Status : Modified

Published: 2026-04-21T17:16:53.790

Modified: 2026-05-21T22:16:48.020

Link: CVE-2026-40161

cve-icon Redhat

Severity : Moderate

Publid Date: 2026-04-21T16:26:27Z

Links: CVE-2026-40161 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2026-05-21T23:00:14Z