# CVE-2026-40938

> Vulnerability · severity: **HIGH** (CVSS 7.5).

## Description

Tekton Pipelines project provides k8s-style resources for declaring CI/CD-style pipelines. From 1.0.0 to before 1.11.0, the git resolver's revision parameter is passed directly as a positional argument to git fetch without any validation that it does not begin with a - character. Because git parses flags from mixed positional arguments, an attacker can inject arbitrary git fetch flags such as --upload-pack=<binary>. Combined with the validateRepoURL function explicitly permitting URLs that begin with / (local filesystem paths), a tenant who can submit ResolutionRequest objects can chain these two behaviors to execute an arbitrary binary on the resolver pod. The tekton-pipelines-resolvers ServiceAccount holds cluster-wide get/list/watch on all Secrets, so code execution on the resolver pod enables full cluster-wide secret exfiltration. This vulnerability is fixed in 1.11.1.

## Key facts

- **CVE ID:** CVE-2026-40938
- **Published:** 2026-04-21
- **CVSS severity:** HIGH
- **CVSS base score:** 7.5
- **CWE codes:** CWE-88

## Affected products

- `linuxfoundation:tekton_pipelines`

## Primary sources

- NIST NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-40938

## Citation

> AI Analytics. CVE-2026-40938. Retrieved 2026-07-18 from https://api.ai-analytics.org/cve/CVE-2026-40938. Derived from NIST NVD. Licensed CC0.

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