high7.1
CVE-2025-68144
mcp-server-git argument injection in git_diff and git_checkout functions allows overwriting local files
Impact
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 for reporting.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| pip | mcp-server-git | < 2025.12.18 | 2025.12.18 |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Lfprojects | Model Context Protocol Servers | before 2025.12.17 |