Sunday, 13 September 2026
8 agent hacks today 7 vs yesterday (1)

Path traversal in MCP git server's git_add tool stages files outside repository

In mcp-server-git versions before 2026.1.14, the git_add tool did not validate that file paths in the files argument stayed within repository boundaries, so relative paths containing '../' could stage files from outside the repository into the Git index. The issue is fixed in version 2026.1.14 (CVE-2026-27735).

Disclosed 26 February 2026 · Record updated 13 September 2026

Impact

Files outside the intended repository boundary could be accepted and staged into the Git index via the git_add tool.

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Sources

  1. nvd.nist.govhttps://nvd.nist.gov/vuln/detail/CVE-2026-27735