# CVE-2026-42215: GitPython command injection via keyword argument bypass

Source: https://junglewise.ai/threats/cve-2026-42215-gitpython-command-injection-via-keyword-argument-bypass  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-05-07. Updated: 2026-05-11  
License: CC BY 4.0 with a link back

CVE-2026-42215 · Severity: high · CVSS 8.8 · Published 2026-05-07

GitPython is a popular Python library used by developers to interact with Git repositories. A security flaw allows an attacker to execute arbitrary commands on the system running the library if the application passes user-controlled input into certain repository functions. This could lead to full system compromise, unauthorized data access, or service disruption.

Technologies: [Gitpython Project Gitpython](https://junglewise.ai/threats/technologies/gitpython), [gitpython (PyPI)](https://junglewise.ai/threats/technologies/pypi-gitpython). Vendors: [Gitpython Project](https://junglewise.ai/threats/vendors/gitpython-project), [PyPI](https://junglewise.ai/threats/vendors/pypi).

## Quick answers

**Is CVE-2026-42215 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-42215 being exploited in the wild.

**How severe is CVE-2026-42215?** High severity, with a CVSS score of 8.8, published 7 May 2026.

**Which products and versions are affected?** gitpython (PyPI) ECOSYSTEM:introduced=3.1.30,fixed=3.1.47.

**Is there a fix for CVE-2026-42215?** Yes. gitpython (PyPI): upgrade to 3.1.47 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-42215 attacked?** It is attacked over the network, in a software library.

**Am I affected by CVE-2026-42215?** Check whether you run Gitpython Project Gitpython or gitpython (PyPI) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## How to fix

- gitpython (PyPI): upgrade to 3.1.47 or later

  ```sh
  pip install "gitpython>=3.1.47"
  ```


## Technical details

GitPython contains a command injection vulnerability due to an incomplete blacklist check for dangerous Git options. While the library explicitly blocks hyphenated options like '--upload-pack' via Git.check_unsafe_options(), it fails to validate the equivalent Python keyword arguments (kwargs) that use underscores (e.g., 'upload_pack'). These underscored kwargs are later normalized into dangerous dashified Git flags during command execution. An attacker who can control the kwargs passed to Repo.clone_from(), Remote.fetch(), Remote.pull(), or Remote.push() can execute arbitrary shell commands even if 'allow_unsafe_options' is set to False. This issue is resolved in version 3.1.47.

## Affected products

- gitpython-developers GitPython >= 3.1.30, < 3.1.47

## Identifiers

- CVE-2026-42215
- GHSA-rpm5-65cw-6hj4
- PYSEC-2026-2160

## Timeline

- 2026-04-22: advisory: Internal advisory published by maintainers
- 2026-04-25: patched: Version 3.1.47 released
- 2026-05-07: disclosed: CVE-2026-42215 published to NVD

## References

- [https://github.com/gitpython-developers/GitPython/releases/tag/3.1.47](https://github.com/gitpython-developers/GitPython/releases/tag/3.1.47)
- [https://github.com/gitpython-developers/GitPython/security/advisories/GHSA-rpm5-65cw-6hj4](https://github.com/gitpython-developers/GitPython/security/advisories/GHSA-rpm5-65cw-6hj4)

## Related threats

- [GitPython command wrappers omit unsafe protocol and option checks](https://junglewise.ai/threats/cve-2026-110857-gitpython-command-wrappers-omit-unsafe-protocol-and-option)
- [GitPython submodule path traversal to arbitrary hook execution](https://junglewise.ai/threats/cve-2026-114145-gitpython-is-a-python-library-used-to-interact-with-git)
- [GitPython symlink following in Submodule.move()](https://junglewise.ai/threats/cve-2026-110860-gitpython-from-3-1-62-before-3-2-0-contains-a-symlink-following)
- [GitPython argument injection in Head.checkout()](https://junglewise.ai/threats/cve-2026-110859-gitpython-before-3-2-0-contains-an-argument-injection)
- [GitPython remote code execution in Remote.pull() refspec argument](https://junglewise.ai/threats/cve-2026-110858-gitpython-from-3-1-30-before-3-2-0-contains-a-remote-code)