Grades are a hygiene check, not a security guarantee.

MCP, MCP server

Maven Decoder Mcp

Maven Decoder Mcp, 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 931d5be9dc8a, unchanged since the check below.

INSTALL_REMOTE_SCRIPT

Why this grade

  • INSTALL_REMOTE_SCRIPT Medium

    Fetches a script from the network and runs it (a pipe to a shell, or an install hook with a URL).

    install.sh, line 167 if ! curl -Ls https://astral.sh/uv/install.sh | sh; then

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

    can delete files.

    PERMISSION_DELETE_FILES

    run_tests.py, line 27

    subprocess.run([sys.executable, "-m", "pip", "install", "pytest", "pytest-asyncio"], check=True)

    run_tests.py, line 44

    result = subprocess.run([

    maven_decoder_mcp/decompiler.py, line 71

    result = subprocess.run(['java', '-jar', cfr_path, '--help'],

    Show more

    maven_decoder_mcp/decompiler.py, line 82

    subprocess.run(['java', '-jar', fernflower_path],

    maven_decoder_mcp/decompiler.py, line 92

    result = subprocess.run(['java', '-jar', procyon_path, '--help'],

    maven_decoder_mcp/decompiler.py, line 101

    result = subprocess.run(['javap', '-help'],

    maven_decoder_mcp/decompiler.py, line 442

    result = subprocess.run(args, capture_output=True, text=True, timeout=30)

    maven_decoder_mcp/decompiler.py, line 528

    result = subprocess.run([

    scripts/release.py, line 66

    shutil.rmtree("build", ignore_errors=True)

    scripts/release.py, line 67

    shutil.rmtree("dist", ignore_errors=True)

    scripts/release.py, line 68

    shutil.rmtree("src/maven_decoder_mcp.egg-info", ignore_errors=True)

  • Install and update

    Serious

    install fetches a script from the network. The docs document an installer that pipes a download into a shell. README documents an installer that pipes a download into a shell.

    INSTALL_REMOTE_SCRIPT INSTALL_DOCUMENTED_INSTALLER

    DISTRIBUTION.md, line 64

    curl -fsSL https://raw.githubusercontent.com/salitaba/maven-decoder-mcp/main/install.sh | bash

    README.md, line 80

    curl -fsSL https://raw.githubusercontent.com/salitaba/maven-decoder-mcp/main/install.sh | bash

    install.sh, line 167

    if ! curl -Ls https://astral.sh/uv/install.sh | sh; then

    Show more

    README.md, line 88

    curl -Ls https://astral.sh/uv/install.sh | sh

    scripts/release.py, line 122

    curl -fsSL https://raw.githubusercontent.com/salitaba/maven-decoder-mcp/main/install.sh | bash

    package.json, line 11

    install

    requirements.txt, line 1

    mcp>=1.0.0

  • Network

    Concern

    can reach www.benf.org. The description does not name that host. can reach a host that is not written as a fixed address.

    NETWORK_NO_FIXED_HOST NETWORK_UNNAMED_HOST

    setup_decompilers.sh, line 16

    wget -q "https://www.benf.org/other/cfr/cfr-0.152.jar" -O cfr.jar

    setup_decompilers.sh, line 25

    wget -q "https://github.com/mstrobel/procyon/releases/download/v0.6.0/procyon-decompiler-0.6.0.jar" -O procyon-decompiler.jar

    maven_decoder_mcp/setup_tool.py, line 56

    with urllib.request.urlopen(url, timeout=60) as response:

  • Secrets

    Concern

    reads a credential or environment file.

    SECRETS_ENV_READ SECRETS_PATH_DOTENV

    maven_decoder_mcp/config.py, line 214

    password = os.environ.get("MAVEN_REMOTE_PASSWORD", "")

    .gitignore, line 104

    # Environments

    .gitignore, line 200

    # dotenv environment variables file

    Show more

    .gitignore, line 201

    .env

    example_config.env, line 2

    # Copy this file to .env or set these environment variables

    marketing/enterprise-post.md, line 44

    2. A `.env` file with `chmod 600`, owned by your user, git-ignored

  • 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

    decompilers/cfr.jar, line 1

    PK

    decompilers/procyon-decompiler.jar, line 1

    PK

  • 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 931d5be9dc8a. can delete files. install fetches a script from the network. The docs document an installer that pipes a download into a shell. README documents an installer that pipes a download into a shell. can reach www.benf.org. The description does not name that host. 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: 931d5be9dc8a81f243171c343c7e2505c0a27064

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