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.

INFO

Published Date :

2026-04-21T16:26:27.381Z

Last Modified :

2026-04-21T17:41:38.895Z

Source :

GitHub_M
AFFECTED PRODUCTS

The following products are affected by CVE-2026-40161 vulnerability.

Vendors Products
Tektoncd
  • Pipeline
REFERENCES

Here, you will find a curated list of external links that provide in-depth information to CVE-2026-40161.

URL Resource
https://github.com/tektoncd/pipeline/issues/9608 cve-icon cve-icon
https://github.com/tektoncd/pipeline/issues/9609 cve-icon cve-icon
https://github.com/tektoncd/pipeline/security/advisories/GHSA-wjxp-xrpv-xpff cve-icon cve-icon
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CVSS Vulnerability Scoring System

Detailed values of each vector for above chart.
Attack Vector
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Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact