Description
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.
Problem types
CWE-88: Improper Neutralization of Argument Delimiters in a Command ('Argument Injection')
Product status
References
github.com/...ervers/security/advisories/GHSA-9xwc-hfwc-8w59
Data based on CVE®. Copyright © 1999-2025, The MITRE Corporation. All rights reserved.
