Skip to content
OpenAdvisories
Medium · 6.4 CVE-2026-27735 EUVD-2026-8770GHSA-vjqx-cfc4-9h6vPYSEC-2026-2630

mcp-server-git : Path traversal in git_add allows staging files outside repository boundaries

Published Feb 25, 2026 · Updated Feb 26, 2026 · Assigned by GitHub_M

Description

Model Context Protocol Servers is a collection of reference implementations for the model context protocol (MCP). In mcp-server-git versions prior to 2026.1.14, the git_add tool did not validate that file paths provided in the files argument were within the repository boundaries. Because the tool used GitPython's repo.index.add() rather than the Git CLI, relative paths containing `../` sequences that resolve outside the repository were accepted and staged into the Git index. Users are advised to upgrade to 2026.1.14 or newer to remediate this issue.

Affected products

VendorProductAffectedFixed
modelcontextprotocol servers < 2026.1.14 —

Affected packages

EcosystemPackageAffectedFixedRecord
PyPI mcp-server-git < 2026.1.14 2026.1.14 GHSA-vjqx-cfc4-9h6v

References