CVE-2025-68144: medium-severity vulnerability in modelcontextprotocol servers
mcp-server-git argument injection in git_diff and git_checkout functions allows overwriting local files
Published · Updated
13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 6.3epss 7.2%
exploitation probability
7.2%top 6% of all CVEs
observed exploitation
nono source reports it
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.
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
Affected products
modelcontextprotocol · serversRelated CVEs — modelcontextprotocol servers
In the same product, most dangerous first.
CVE-2025-68143MEDIUMmcp-server-git's unrestricted git_init tool allows repository creation at arbitrary filesystem locationsEPSS 8.1%CVE-2025-68145MEDIUMmcp-server-git has missing path validation when using --repository flagEPSS 7.0%CVE-2025-53109HIGHModel Context Protocol Servers Vulnerable to Path Validation Bypass via Prefix Matching and Symlink HandlingEPSS 0.8%CVE-2025-53110HIGHModel Context Protocol Servers Vulnerable to Path Validation Bypass via Colliding Path PrefixEPSS 0.6%CVE-2026-27735MEDIUMmcp-server-git : Path traversal in git_add allows staging files outside repository boundariesEPSS 0.5%