CVE-2026-40161

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.

CVSS v3 7.7 HIGH

7.7^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.1 / Impact : 4.0

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope CHANGED

References

Link	Resource
https://github.com/tektoncd/pipeline/issues/9608	Issue Tracking
https://github.com/tektoncd/pipeline/issues/9609	Issue Tracking
https://github.com/tektoncd/pipeline/security/advisories/GHSA-wjxp-xrpv-xpff	Vendor Advisory

Configurations

Configuration 1 (hide)

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

History

24 Apr 2026, 20:55

Type	Values Removed	Values Added
First Time		Linuxfoundation Linuxfoundation tekton Pipelines
References	~~() https://github.com/tektoncd/pipeline/issues/9608 -~~	() https://github.com/tektoncd/pipeline/issues/9608 - Issue Tracking
References	~~() https://github.com/tektoncd/pipeline/issues/9609 -~~	() https://github.com/tektoncd/pipeline/issues/9609 - Issue Tracking
References	~~() https://github.com/tektoncd/pipeline/security/advisories/GHSA-wjxp-xrpv-xpff -~~	() https://github.com/tektoncd/pipeline/security/advisories/GHSA-wjxp-xrpv-xpff - Vendor Advisory
CPE		cpe:2.3:a:linuxfoundation:tekton_pipelines::::::go::*
CWE		NVD-CWE-noinfo

21 Apr 2026, 17:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-04-21 17:16

Updated : 2026-04-24 20:55

NVD link : CVE-2026-40161

Mitre link : CVE-2026-40161

CVE.ORG link : CVE-2026-40161

JSON object : View

Products Affected

linuxfoundation

tekton_pipelines

CWE

CWE-201

Insertion of Sensitive Information Into Sent Data

NVD-CWE-noinfo

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