Grades are a hygiene check, not a security guarantee.

MCP, MCP server

io.github.Anandb71/arbor

io.github.Anandb71/arbor, an MCP server listed in the PlugVet directory.

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 76c88968c647.

INSTALL_REMOTE_SCRIPT SECRETS_PATH_CREDENTIAL

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).

    .github/workflows/release.yml, line 275 curl -fsSL https://raw.githubusercontent.com/Anandb71/arbor/main/scripts/install.sh | bash -s -- --version ${TAG}

  • SECRETS_PATH_CREDENTIAL Medium

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

    .gitignore, line 73 credentials.json

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

    packaging/npm/install.js, line 67

    fs.unlinkSync(tmpFile);

    packaging/npm/install.js, line 75

    fs.unlinkSync(tmpFile);

  • Install and update

    Serious

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

    INSTALL_REMOTE_SCRIPT INSTALL_DOCUMENTED_INSTALLER

    .github/workflows/release.yml, line 275

    curl -fsSL https://raw.githubusercontent.com/Anandb71/arbor/main/scripts/install.sh | bash -s -- --version ${TAG}

    README.md, line 363

    curl -fsSL https://raw.githubusercontent.com/Anandb71/arbor/main/scripts/install.sh | bash

    docs/INSTALL.md, line 24

    curl -fsSL https://raw.githubusercontent.com/Anandb71/arbor/main/scripts/install.sh | bash

    Show more

    docs/INSTALL.md, line 38

    curl -fsSL https://raw.githubusercontent.com/Anandb71/arbor/main/scripts/install.sh | bash -s -- --version <tag>

    docs/QUICKSTART.md, line 14

    curl -fsSL https://raw.githubusercontent.com/Anandb71/arbor/main/scripts/install.sh | bash

    docs/RELEASE_NOTES_v3.0.3.md, line 104

    curl -fsSL https://raw.githubusercontent.com/Anandb71/arbor/main/scripts/install.sh | bash -s -- --version v3.0.3

  • Network

    Concern

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

    NETWORK_NO_FIXED_HOST

    crates/arbor-core/src/fallback_parser.rs, line 57

    // `# Compare app.fetch() between refs` used to yield a function named

    crates/arbor-core/src/fallback_parser.rs, line 518

    // `# Compare app.fetch() between the working tree and a git ref`

    crates/arbor-core/src/fallback_parser.rs, line 521

    let src = "#!/bin/bash\n# Compare app.fetch() between refs\nreal_fn() {\n echo hi\n}\n";

    Show more

    crates/arbor-core/src/languages/rust.rs, line 971

    async fn fetch(client: &Client) -> Result<Draft, Error> {

    extensions/arbor-vscode/src/extension.ts, line 299

    ws = new WebSocket(serverUrl);

    packaging/npm/install.js, line 28

    https.get(url, { headers: { "User-Agent": "arbor-npm" } }, (res) => {

    scripts/install.sh, line 87

    if command -v curl >/dev/null 2>&1; then

    scripts/install.sh, line 88

    release_json="$(curl -fsSL -H "User-Agent: arbor-install-script" "$release_url")"

  • Secrets

    Concern

    reads a credential or environment file.

    SECRETS_PATH_CREDENTIAL SECRETS_PATH_DOTENV

    .gitignore, line 73

    credentials.json

    crates/arbor-cli/src/commands.rs, line 575

    .env("LC_ALL", "C")

    crates/arbor-cli/src/receipt/app.rs, line 147

    // Environment files (.env, .env.local) and Django's settings.py

    Show more

    crates/arbor-cli/src/receipt/app.rs, line 151

    && (file_name.starts_with(".env")

    crates/arbor-cli/src/receipt/app.rs, line 333

    assert_eq!(areas(".env.local", &[]), vec![Area::Settings]);

    .gitignore, line 68

    .env

    docs/MCP_INTEGRATION.md, line 39

    "envFile": "${workspaceFolder}/.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

    crates/arbor-core/src/usages/python.rs, line 1

    //! Python SDK usage extraction.

    crates/arbor-core/src/usages/python/tests.rs, line 1

    use super::extract;

  • 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 76c88968c647. can delete files. install fetches a script from the network. 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: 76c88968c647160db2ed62bfeaa4eca46a43b67a

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