Grades are a hygiene check, not a security guarantee.

MCP, MCP server

Scout Security

Deterministic security scanner for AI-assisted coding.

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 adecb641f16b, 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.

    benchmarks/run_benchmark.py, line 52 "os.system() call",

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. can delete files.

    PERMISSION_SHELL_UNDECLARED PERMISSION_DELETE_FILES

    benchmarks/run_benchmark.py, line 52

    "os.system() call",

    benchmarks/run_benchmark.py, line 53

    "os.system() with constant command",

    benchmarks/run_benchmark.py, line 108

    return subprocess.run(

    Show more

    benchmarks/run_benchmark.py, line 119

    shutil.rmtree(dest, ignore_errors=True)

    benchmarks/run_benchmark.py, line 130

    shutil.rmtree(dest, ignore_errors=True)

    scout/git_history.py, line 39

    result = subprocess.run(

    scout/git_history.py, line 68

    proc = subprocess.Popen(

    scout/mcp_server.py, line 48

    diff = subprocess.run(

  • 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. can reach api.github.com. The description does not name that host.

    NETWORK_NO_FIXED_HOST NETWORK_UNNAMED_HOST

    scout/ai/client.py, line 181

    resp = httpx.post(url, json=payload, timeout=60)

    README.md, line 228

    Deep analysis - **injection** (SQL/command/XSS) and **security headers** - targets **Python and JS/TS**, where the detection patterns are idiom-specific. Both languages get intra-f

    docs/index.html, line 822

    fetch('https://api.github.com/repos/Varpost/Scout')

  • Secrets

    Concern

    reads a credential or environment file.

    SECRETS_ENV_READ SECRETS_PATH_DOTENV

    scout/config.py, line 138

    # Load .env from current directory if present

    scout/config.py, line 139

    env_path = Path.cwd() / ".env"

    scout/config.py, line 183

    anthropic_key=os.getenv("ANTHROPIC_API_KEY"),

    Show more

    scout/config.py, line 184

    openai_key=os.getenv("OPENAI_API_KEY"),

    scout/fix.py, line 5

    gitignored ``.env``), and a vulnerable ``requirements.txt`` pin is bumped to

    scout/fix.py, line 75

    The secret value moves to ``<root>/.env`` (created if needed) and

    scout/fix.py, line 76

    ``.env`` is ensured in ``<root>/.gitignore`` - the exact remediation the

    scout/fix.py, line 105

    env_path = root / ".env"

    scout/fix.py, line 114

    if ".env" not in {line.strip() for line in gitignore.splitlines()}:

    scout/fix.py, line 118

    edits.append(FileEdit(gitignore_path, f"{gitignore}.env{gi_nl}"))

  • Agent instructions

    Pass

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

  • Obfuscation

    Pass

    No encoded or minified payload found.

  • Licence

    Note

    no licence file found.

    LICENCE_MISSING

    No file path was stored.

    no licence file found.

  • Maintainer activity

    Pass

    The latest commit is within the last 365 days.

Note

Hygiene check of commit adecb641f16b. requests shell access. No manifest field names shell or command execution. can delete files. can reach a host that is not written as a fixed address. can reach api.github.com. The description does not name that host. reads a credential or environment file. no licence file found.

Date and source

Date checked:

View source

github.com

Commit graded: adecb641f16bfb41e5d451f0441b4dc52aab4867

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