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CVE-2025-68145: mcp-server-git has missing path validation when using --repository flag

mediumCVSS 4.0 6.4GHSA-j22h-9j4x-23w5

In mcp-server-git versions prior to 2025.12.18, when the server is started with the --repository flag to restrict operations to a specific repository path, it did not validate that repopath arguments in subsequent tool calls were actually within that configured path. This could allow tool calls to operate on other repositories accessible to the server process.

Published Dec 17, 2025 · Updated Dec 20, 2025

Affected packages

mcp-server-git

Ecosystem
PyPI
Affected
< 2025.12.18
Fixed in
2025.12.18
Check
pip show mcp-server-git

Advisory details

From the GitHub Advisory Database (CC BY 4.0).

In mcp-server-git versions prior to 2025.12.18, when the server is started with the --repository flag to restrict operations to a specific repository path, it did not validate that repo_path arguments in subsequent tool calls were actually within that configured path. This could allow tool calls to operate on other repositories accessible to the server process. The fix adds path validation that resolves both the configured repository and the requested path (following symlinks) and verifies the requested path is within the allowed repository before executing any git operations. Users are advised to upgrade to 2025.12.18 to remediate this issue.

Thank you to https://hackerone.com/yardenporat for reporting.

References

How this page is made: the data panel comes from the GitHub Advisory Database, CISA’s KEV catalog, the NVD and FIRST EPSS, and updates twice a day. No analysis has been written for this entry yet. Methodology

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