# CVE-2025-68144: mcp-server-git — Fixed in 2025.12.18

🐍 PyPI

Not in CISA KEV

# CVE-2025-68144 — mcp-server-git

CVE-2025-68144 is a CWE-88 vulnerability in mcp-server-git. A fix is available for mcp-server-git — see the affected versions and patch details below.

mcp-server-git argument injection in git\_diff and git\_checkout functions allows overwriting local files

Also known asPYSEC-2026-1622

Published

Dec 17, 2025

Updated

Jul 7, 2026

Affected

1 pkg

Patched

1 / 1

Exploits

None indexed

Exploitation data as of Nov 8, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

## EPSS Exploitation Probability

[via FIRST.org ↗](https://www.first.org/epss/)

7.2%probability of exploitation in next 30 days

Lower Risk0.00%

Lower risk than most CVEs94th percentile — riskier than 94% of all scored CVEsHighest risk

0.00%3.21%6.42%9.62%0.0%7.2%May 26Sep 26Nov 26

Probability of exploitation in the next 30 days, from [FIRST.org EPSS](https://www.first.org/epss/).

## Real-World Exposure

1 pkg affected

🐍`mcp-server-git`

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects PyPI packages — download data is not available via public APIs for these ecosystems.

## Description

In mcp-server-git versions prior to 2025.12.18, the git\_diff and git\_checkout functions passed user-controlled arguments directly to git CLI commands without sanitization. Flag-like values (e.g., `--output=/path/to/file` for `git_diff`) would be interpreted as command-line options rather than git refs, enabling arbitrary file overwrites. The fix adds validation that rejects arguments starting with - and verifies the argument resolves to a valid git ref via rev\_parse before execution. Users are advised to update to 2025.12.18 resolve this issue.

Thank you to [https://hackerone.com/yardenporat](https://hackerone.com/yardenporat) for reporting.

## Affected Packages

1 total 1 fixed

Ecosystem

Package

Vulnerable range

Fix

🐍PyPI

`mcp-server-git` 

all versions

2025.12.18`pip install --upgrade 'mcp-server-git==2025.12.18'`

## Affected Products

1 product · 1 configurations

Application

`model context protocol servers`lfprojects

< 2025.12.17

range

## Detection & mitigation playbook

Open-source dependency

1.  ### Detect
    
    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for mcp-server-git, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
    
2.  ### Fix
    
    Update mcp-server-git to 2025.12.18 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2025-68144 is resolved across your whole dependency graph.
    
3.  ### Workarounds
    
    If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.
    

## Frequently Asked Questions

In mcp-server-git versions prior to 2025.12.18, the git\_diff and git\_checkout functions passed user-controlled arguments directly to git CLI commands without sanitization. Flag-like values (e.g., \`--output=/path/to/file\` for \`git\_diff\`) would be interpreted as command-line options rather than git refs, enabling arbitrary file overwrites. The fix adds validation that rejects arguments starting with - and verifies the argument resolves to a valid git ref via rev\_parse before execution. Users are advised to update to 2025.12.18 resolve this issue. Thank you to https://hackerone.com/yardenporat f

O3 Security · Impact-Aware SCA

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