Grades are a hygiene check, not a security guarantee.

MCP, MCP server

io.github.FixemBCN/mcp-bifrost

io.github.FixemBCN/mcp-bifrost, 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 e82177ab76e1, unchanged since the check below.

PERMISSION_SHELL_UNDECLARED

Why this grade

  • PERMISSION_SHELL_UNDECLARED Medium

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

    calibratge/calibra.py, line 94 r = subprocess.run(

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

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

    PERMISSION_SHELL_UNDECLARED

    calibratge/calibra.py, line 94

    r = subprocess.run(

    calibratge/calibra.py, line 111

    r = subprocess.run(["php", "-l", tmp], capture_output=True, text=True)

    mcp_bifrost/patcher.py, line 38

    proc = subprocess.run(

    Show more

    mcp_bifrost/patcher.py, line 71

    proc = subprocess.run(

    mcp_bifrost/patcher.py, line 83

    proc = subprocess.run(

    mcp_bifrost/patcher.py, line 241

    proc = subprocess.run(command, shell=True, cwd=str(cwd),

    mcp_bifrost/vcs.py, line 40

    return subprocess.run(cmd, **kwargs)

    mcp_bifrost/vcs.py, line 161

    proc = subprocess.run(args, cwd=str(st.root), capture_output=True,

  • 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

    calibratge/calibra.py, line 264

    with urllib.request.urlopen(req, timeout=180) as resp:

    mcp_bifrost/worker.py, line 241

    with urllib.request.urlopen(req, timeout=self.timeout) as resp:

  • Secrets

    Concern

    reads a credential or environment file.

    SECRETS_ENV_READ SECRETS_PATH_DOTENV

    calibratge/calibra.py, line 401

    api_key = (os.environ.get("BIFROST_WORKER_API_KEY")

    calibratge/calibra.py, line 402

    or os.environ.get("DEEPSEEK_API_KEY"))

    mcp_bifrost/worker.py, line 183

    api_key = (os.environ.get("BIFROST_WORKER_API_KEY")

    Show more

    mcp_bifrost/worker.py, line 184

    or os.environ.get("DEEPSEEK_API_KEY")

    .gitignore, line 1

    node_modules/

    .gitignore, line 2

    .env

    .gitignore, line 9

    # Clau del worker - mai al repo

    .gitignore, line 28

    *.env

    .gitignore, line 29

    !.env.example

  • 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.

Note

Hygiene check of commit e82177ab76e1. requests shell access. No manifest field names shell or command execution. 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: e82177ab76e1b47ece54191de30d819981b20b53

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