Grades are a hygiene check, not a security guarantee.

Claude Code, Plugin

Mosofin Mcp Plugin

Mosofin Mcp Plugin has PlugVet grade D (Two or more medium findings, or a high) from our automated hygiene checks. Main finding: runs shell commands that the manifest or description does not mention. This is a hygiene check, not a security audit or a guarantee. Graded on 17/10/2026.

Connect your AI assistant to MosoFin: authenticated, workspace-scoped, read-only financial data across connected SaaS platforms.

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 16082b9f33c0, unchanged since the check below.

PERMISSION_SHELL_UNDECLARED NETWORK_HOST_FROM_INPUT

Why this grade

  • PERMISSION_SHELL_UNDECLARED Medium

    Runs shell commands that the manifest or description does not mention.

    scripts/test_local_connection.py, line 31 self.process = subprocess.Popen([config["command"], *config["args"]], env=env, text=True,

  • NETWORK_HOST_FROM_INPUT Medium

    A file takes a URL or endpoint as input and has no fixed host list.

    scripts/callback-page.test.cjs, line 31 const response = await fetch(`${await base}/oauth/callback?code=synthetic-secret&state=synthetic-state`);

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.

If you think this grade is wrong, email [email protected] with the entry link and your evidence. We aim to acknowledge within two working days and decide within seven. If we confirm an error, we aim to correct it within 24 hours of confirming it. These are aims, not guarantees.

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

    requests shell access. No manifest field names shell or command execution.

    PERMISSION_SHELL_UNDECLARED

    scripts/test_local_connection.py, line 31

    self.process = subprocess.Popen([config["command"], *config["args"]], env=env, text=True,

    scripts/test_remote_connection.py, line 21

    subprocess.run(

    scripts/test_slow_signin.py, line 29

    child=subprocess.Popen(json.load(open(sys.argv[1])),stdin=subprocess.PIPE,stdout=subprocess.PIPE,text=True)

    Show more

    scripts/test_slow_signin.py, line 100

    process = subprocess.Popen(

  • Install and update

    Pass

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

  • Network

    Serious

    accepts a host from input, with no fixed list in this file.

    NETWORK_HOST_FROM_INPUT

    scripts/callback-page.test.cjs, line 31

    const response = await fetch(`${await base}/oauth/callback?code=synthetic-secret&state=synthetic-state`);

    scripts/callback-page.test.cjs, line 51

    const response = await fetch(`${await base}/oauth/callback?error=access_denied`);

    scripts/callback-page.test.cjs, line 60

    const response = await fetch(`${await base}${route}`, { method });

    Show more

    scripts/conversation-signin.test.cjs, line 186

    const page = await fetch(first.authorization_url);

    scripts/conversation-signin.test.cjs, line 230

    await fetch(renewed.authorization_url);

    scripts/conversation-signin.test.cjs, line 239

    await fetch(denied.authorization_url);

    scripts/conversation-signin.test.cjs, line 247

    await fetch(retry.authorization_url);

    scripts/conversation-signin.test.cjs, line 274

    assert.equal((await fetch(pendingLink.authorization_url)).status, 200);

    scripts/test_slow_signin.py, line 61

    with socket.create_connection((callback.hostname,callback.port),timeout=.2): break

  • Secrets

    Concern

    reads a credential or environment file.

    SECRETS_ENV_READ SECRETS_PATH_UNCONFIRMED

    README.md, line 130

    | Credentials | OAuth in the browser. The `mosofin` HTTP entry's tokens are held by the host. The `local` helper keeps its own tokens under `${CLAUDE_PLUGIN_DATA}/auth`, owner-only

    scripts/session-start.test.cjs, line 13

    const run = env => JSON.parse(execFileSync(process.execPath, [hook], { env: { PATH: process.env.PATH, ...env } }).toString());

  • 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.

Get the full report on this tool, £49

Note

Hygiene check of commit 16082b9f33c0. requests shell access. No manifest field names shell or command execution. accepts a host from input, with no fixed list in this file. reads a credential or environment file.

Date and source

Date checked:

View source

github.com

Commit graded: 16082b9f33c06c582073e61c80791c8f53974c4c

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