Grades are a hygiene check, not a security guarantee.

MCP, MCP server

Mcp Defender

Mcp Defender, an MCP server listed in the PlugVet directory.

Compatibility: Not stated.

Grade C

One Medium finding. Read the findings before installing.

Graded by PlugVetRubric v2

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

Rescanned at commit 7fa7e7571a22, unchanged since the check below.

SECRETS_PATH_CREDENTIAL

Why this grade

  • SECRETS_PATH_CREDENTIAL Medium

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

    signatures/deterministic/file-path-validator.js, line 27 '~/.ssh/',

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

    Concern

    can delete files.

    PERMISSION_DELETE_FILES

    src/main.ts, line 460

    fs.unlinkSync(tmpCliPath);

    src/services/configurations/base-configuration.ts, line 426

    await fs.unlink(unprotectedPath);

  • Install and update

    Pass

    No install-time script found, and dependencies are pinned or absent.

  • Network

    Concern

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

    NETWORK_NO_FIXED_HOST

    src/cli.ts, line 263

    const req = http.request(options, (res) => {

    src/defender/verification-utils.ts, line 354

    const response = await fetch(url, {

    src/defender/transports/http-sse-transport.ts, line 118

    const response = await fetch(messageEndpoint, {

    Show more

    src/defender/transports/http-sse-transport.ts, line 763

    const response = await fetch(messageEndpoint, {

    src/services/settings/handlers.ts, line 28

    const response = await fetch(

    src/services/settings/handlers.ts, line 219

    const response = await fetch(

    src/services/settings/handlers.ts, line 314

    const response = await fetch(

    src/services/settings/handlers.ts, line 344

    await fetch(

  • Secrets

    Concern

    reads a credential or environment file.

    SECRETS_PATH_CREDENTIAL SECRETS_PATH_DOTENV

    signatures/deterministic/file-path-validator.js, line 27

    '~/.ssh/',

    signatures/deterministic/file-path-validator.js, line 34

    '/.env',

    signatures/deterministic/file-path-validator.js, line 35

    '.env',

    Show more

    signatures/deterministic/file-path-validator.js, line 44

    'id_rsa',

    .gitignore, line 62

    # dotenv environment variables file

    .gitignore, line 63

    .env

  • Agent instructions

    Pass

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

  • Obfuscation

    Note

    a file was over the read cap and was not fully read.

    OBFUSCATION_FILE_OVER_READ_CAP

    package-lock.json, line 1

    {

    src/assets/1024x1024_logo.icns, line 1

    �PNG

  • Licence

    Pass

    A licence file is present (LICENSE).

  • Maintainer activity

    Pass

    The latest commit is within the last 365 days.

Get the full report on this tool, £49

Note

Hygiene check of commit 7fa7e7571a22. can delete files. can reach a host that is not written as a fixed address. reads a credential or environment file. a file was over the read cap and was not fully read.

Date and source

Date checked:

View source

github.com

Commit graded: 7fa7e7571a22de10dc2af5d63d8874d7d682c2fa

This link goes to the original host. PlugVet does not host or check what you download from there, and installing it is your own decision and risk.

Read how this letter is chosen