Vulnerability Description
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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linuxfoundation | Tekton Pipelines | >= 1.0.0, <= 1.10.0 |
Related Weaknesses (CWE)
References
- https://github.com/tektoncd/pipeline/issues/9608Issue Tracking
- https://github.com/tektoncd/pipeline/issues/9609Issue Tracking
- https://github.com/tektoncd/pipeline/security/advisories/GHSA-wjxp-xrpv-xpffVendor Advisory
FAQ
What is CVE-2026-40161?
CVE-2026-40161 is a vulnerability with a CVSS score of 7.7 (HIGH). 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 ...
How severe is CVE-2026-40161?
CVE-2026-40161 has been rated HIGH with a CVSS base score of 7.7/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-40161?
Check the references section above for vendor advisories and patch information. Affected products include: Linuxfoundation Tekton Pipelines.