Grades are a hygiene check, not a security guarantee.

MCP, MCP server

Git Mcp Server

@cyanheads/git-mcp-server A Git MCP server for AI agents.

Compatibility: Not stated.

Grade D

Two or more Medium findings, or a High finding. Only try it in a sandbox.

Graded by PlugVetRubric v2

Not a guarantee. A hygiene check of the source at the commit shown, not a security audit.

Rescanned at commit d34d83af201d, unchanged since the check below.

INSTALL_LIFECYCLE_HOOK SECRETS_PATH_CREDENTIAL

Why this grade

  • INSTALL_LIFECYCLE_HOOK Medium

    A package install hook (preinstall, install, postinstall or prepare) runs a script.

    package.json, line 53 prepare

  • SECRETS_PATH_CREDENTIAL Medium

    Mentions a credential store path (~/.ssh, id_rsa, .npmrc, .aws/credentials, credentials.json, .netrc).

    scripts/devcheck.ts, line 315 getCommand: () => ['git', 'ls-files', '*.env*', '.npmrc', '.netrc'],

Any High, or two or more Medium findings, give D. One Medium gives C. Low findings or a security Note give B. Each code names a finding behind the letter.

Grades are a hygiene check of the source at the commit shown, on the date checked, not a security audit or a guarantee. The free directory grades are automated. Before release, a PlugVet engineer reviews every paid report and any grade we hold back, including all F grades, against the source code and the evidence we quote.

What was checked

Plain notes from the hygiene checks.

  • Permissions

    Note

    requests shell access. The manifest names this permission.

    PERMISSION_SHELL_DECLARED

    src/services/git/providers/cli/utils/command-builder.ts, line 245

    * Process spawning uses array arguments (`Bun.spawn` / `child_process.spawn`),

    src/services/git/providers/cli/utils/git-executor.ts, line 7

    * (Node.js), it uses child_process.spawn. When running in native Bun,

    src/services/git/providers/cli/utils/git-executor.ts, line 36

    * - In Node.js runtime (bunx): Uses child_process.spawn for compatibility

    Show more

    src/services/git/providers/cli/utils/runtime-adapter.ts, line 230

    * Spawns a git command using Node.js child_process.spawn.

    CHANGELOG.md, line 635

    - **Windows Git Executable Resolution**: Fixed `ENOENT` error when spawning git commands on Windows. Node.js `child_process.spawn()` doesn't search PATH like cmd.exe does. Replaced

    CHANGELOG.md, line 882

    - **Cross-Runtime Compatibility**: The server now officially supports both **Bun** and **Node.js** runtimes. A new runtime detection mechanism (`src/utils/internal/runtime.ts`) and

    CHANGELOG.md, line 1300

    - Patched a command injection vulnerability where unsanitized user input could be passed to `child_process.exec`. All `exec` calls have been replaced with the safer `execFile` meth

  • Install and update

    Concern

    runs a script at install time. dependencies are not pinned.

    INSTALL_LIFECYCLE_HOOK INSTALL_UNPINNED

    package.json, line 53

    prepare

    package.json, line 79

    cross-spawn

  • Network

    Concern

    can reach a host that is not written as a fixed address.

    NETWORK_NO_FIXED_HOST

    scripts/validate-mcp-publish-schema.ts, line 101

    const response = await axios.get(searchUrl);

    scripts/validate-mcp-publish-schema.ts, line 197

    const { data: schema } = await axios.get(MCP_SCHEMA_URL);

    skills/field-test/SKILL.md, line 67

    curl -sS -D "$hdr" -X POST "$MCP_URL" \

    Show more

    skills/field-test/SKILL.md, line 80

    curl -sS -X POST "$MCP_URL" \

    skills/field-test/SKILL.md, line 99

    curl -sS -X POST "$MCP_URL" \

    src/worker.ts, line 237

    async fetch(

    src/worker.ts, line 274

    return await app.fetch(request, env, ctx);

    src/mcp-server/tools/definitions/git-fetch.tool.ts, line 82

    const result = await provider.fetch(fetchOptions, {

  • Secrets

    Concern

    reads a credential or environment file.

    SECRETS_PATH_CREDENTIAL SECRETS_PATH_DOTENV

    scripts/devcheck.ts, line 315

    getCommand: () => ['git', 'ls-files', '*.env*', '.npmrc', '.netrc'],

    scripts/devcheck.ts, line 316

    // Success if output is empty OR only contains '.env.example'.

    scripts/devcheck.ts, line 321

    if (files.length === 1 && files[0] === '.env.example') return true;

    Show more

    .dockerignore, line 161

    # =============================================================================

    .dockerignore, line 162

    .env

    .dockerignore, line 163

    .env.local

    .dockerignore, line 164

    .env.development.local

    .dockerignore, line 165

    .env.test.local

  • Agent instructions

    Pass

    No instruction to ignore earlier instructions or to hide a step.

  • Obfuscation

    Pass

    No encoded or minified payload found.

  • Licence

    Pass

    A licence file is present (LICENSE).

  • Maintainer activity

    Pass

    The latest commit is within the last 365 days.

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Note

Hygiene check of commit d34d83af201d. requests shell access. The manifest names this permission. runs a script at install time. dependencies are not pinned. can reach a host that is not written as a fixed address. reads a credential or environment file.

Date and source

Date checked:

View source

github.com

Commit graded: d34d83af201dc0c9012ca501336c3df6171da932

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Read how this letter is chosen