mcp-server-git's unrestricted git_init tool allows repository creation at arbitrary filesystem locations

高 8.8CVE-2025-68143 · GHSA-5cgr-j3jf-jw3v · PYSEC-2026-1621 · 17/12/2025 公開 · 30/09/2026 更新

要点

CVE-2025-68143 は mcp-server-git, model context protocol servers (lfprojects) に影響する深刻度「高」 (CVSS 8.8) の脆弱性です。
今後30日間に悪用される確率（EPSS）：8.1%（全脆弱性の 94.8% より高い）。
対処：2025.9.25 以降に更新してください。

パッケージ	影響を受けるバージョン	修正済みバージョン
mcp-server-git PyPI	`< 2025.9.25`	`2025.9.25`
model context protocol servers lfprojects	`< 2025.9.25`	`2025.9.25`

概要

In mcp-server-git versions prior to 2025.9.25, the git_init tool accepted arbitrary filesystem paths and created Git repositories without validating the target location. Unlike other tools which required an existing repository, git_init could operate on any directory accessible to the server process, making those directories eligible for subsequent git operations. The tool was removed entirely, as the server is intended to operate on existing repositories only. Users are advised to upgrade to 2025.9.25 or newer to remediate this issue.

Thank you to https://hackerone.com/yardenporat for disclosure, @0dd for contributing the fix.

NVD の説明

Model Context Protocol Servers is a collection of reference implementations for the model context protocol (MCP). In mcp-server-git versions prior to 2025.9.25, the git_init tool accepted arbitrary filesystem paths and created Git repositories without validating the target location. Unlike other tools which required an existing repository, git_init could operate on any directory accessible to the server process, making those directories eligible for subsequent git operations. The tool was removed entirely, as the server is intended to operate on existing repositories only. Users are advised to upgrade to 2025.9.25 or newer to remediate this issue.