# CVE-2026-40161

> Vulnerability · severity: **HIGH** (CVSS 7.7).

## 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.

## Key facts

- **CVE ID:** CVE-2026-40161
- **Published:** 2026-04-21
- **CVSS severity:** HIGH
- **CVSS base score:** 7.7
- **CWE codes:** CWE-201, NVD-CWE-noinfo

## Affected products

- `linuxfoundation:tekton_pipelines`

## Primary sources

- NIST NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-40161

## Citation

> AI Analytics. CVE-2026-40161. Retrieved 2026-09-06 from https://api.ai-analytics.org/cve/CVE-2026-40161. Derived from NIST NVD. Licensed CC0.

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