{"id":"GHSA-9xwc-hfwc-8w59","summary":" mcp-server-git argument injection in git_diff and git_checkout functions allows overwriting local files","details":"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.\n\nThank you to https://hackerone.com/yardenporat for reporting.","aliases":["CVE-2025-68144","PYSEC-2026-1622"],"modified":"2026-07-07T17:56:33.750487025Z","published":"2025-12-17T22:50:29Z","database_specific":{"cwe_ids":["CWE-88"],"severity":"MODERATE","github_reviewed":true,"github_reviewed_at":"2025-12-17T22:50:29Z","nvd_published_at":"2025-12-17T23:16:04Z"},"references":[{"type":"WEB","url":"https://github.com/modelcontextprotocol/servers/security/advisories/GHSA-9xwc-hfwc-8w59"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-68144"},{"type":"PACKAGE","url":"https://github.com/modelcontextprotocol/servers"}],"affected":[{"package":{"name":"mcp-server-git","ecosystem":"PyPI","purl":"pkg:pypi/mcp-server-git"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2025.12.18"}]}],"versions":["0.2.0","0.3.0","0.4.0","0.4.1","0.5.0","0.5.1","0.6.0","0.6.1","0.6.2","2025.1.14","2025.11.25","2025.7.1","2025.9.25"],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2025/12/GHSA-9xwc-hfwc-8w59/GHSA-9xwc-hfwc-8w59.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:N/SI:H/SA:L"}]}