mcp-server-git argument injection in git_diff and git_checkout functions allows overwriting local files
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Passive
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- Code execution
- Confidentiality · integrity · availability
- None · None · None
- Fix status
- Fixed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA and GitHub. Impact type from CWE-88.
Summary
In mcp-server-git versions prior to 2025.12.17, 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 2025.12.17 resolve this issue when it is released.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| MLflow | servers | before 2025.12.17 | 2025.12.17 | Patch available | CNA |
| — | mcp-server-git (PyPI) | before 2025.12.18 | 2025.12.18 | Patch available | GHSA-9xwc-hfwc-8w59 |
- servers VendorMLflow Affected before 2025.12.17 Fixed in 2025.12.17 Patch available CNA
- mcp-server-git (PyPI) Vendor— Affected before 2025.12.18 Fixed in 2025.12.18 Patch available GHSA-9xwc-hfwc-8w59
Remediation
- Fix · CNA servers (modelcontextprotocol) Fixed in 2025.12.17
- Fix · GHSA-9xwc-hfwc-8w59 mcp-server-git (PyPI) Fixed in 2025.12.18 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2025-68144
- 2026-10-03 Alias added: GHSA-9xwc-hfwc-8w59
References
More MLflow Model Context Protocol Servers vulnerabilities
- TI-2025-41724 mcp-server-git's unrestricted git_init tool allows repository creation at arbitrary filesystem locations CVSS 4.0MEDIUM 6.5
- TI-2025-41726 mcp-server-git has missing path validation when using --repository flag CVSS 4.0MEDIUM 6.4
- TI-2026-22095 mcp-server-git : Path traversal in git_add allows staging files outside repository boundaries CVSS 4.0MEDIUM 6.4
Sources
- CVE-2025-68144 · CVE Program
- CVE-2025-68144 · NVD
- FIRST EPSS
- GHSA-9xwc-hfwc-8w59 · GitHub Advisory Database · CC BY 4.0
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