Grades are a hygiene check, not a security guarantee.

MCP, MCP server

Marrow

Marrow, 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.

INSTALL_REMOTE_SCRIPT OBFUSCATION_ENCODED_BLOB

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).

    crates/marrow-cli/src/setup.rs, line 1079 "curl -fsSL https://raw.githubusercontent.com/aryawidjaja/marrow/main/install.sh | sh",

  • OBFUSCATION_ENCODED_BLOB Medium

    Contains a long base64 shaped string in a file that should be readable.

    crates/marrow-store/src/integrity.rs, line 390 let expected = "6d6172726f772d6d656d6f72792d63616e6f6e2d76310000000000000000073031464958454400000000000000086465636973696f6e000000000000000a7375706572736564656401000000000000000a6a

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

    e2e/smoke.sh, line 134

    result = subprocess.run(

    python/marrow-anthropic/src/marrow_anthropic/store.py, line 104

    shutil.rmtree(target)

    python/marrow-anthropic/src/marrow_anthropic/store.py, line 126

    shutil.rmtree(child)

  • 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

    crates/marrow-cli/src/setup.rs, line 1079

    "curl -fsSL https://raw.githubusercontent.com/aryawidjaja/marrow/main/install.sh | sh",

    deploy/README.md, line 12

    brew install flyctl # or: curl -L https://fly.io/install.sh | sh

    llms.txt, line 13

    # curl -fsSL https://raw.githubusercontent.com/aryawidjaja/marrow/main/install.sh | sh

  • Network

    Concern

    can reach api.github.com. 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

    install.sh, line 25

    tag="${MARROW_VERSION:-$(curl -fsSL "https://api.github.com/repos/$repo/releases/latest" \

    install.sh, line 38

    curl -fsSL "$url" -o "$tmp/$asset"

    install.sh, line 39

    if ! curl -fsSL "$url.sha256" -o "$tmp/$asset.sha256"; then

    Show more

    crates/marrow-cli/src/setup.rs, line 1083

    nstall --git ... --force, or re-run the curl installer), then run `marrow setup --glo

    crates/marrow-web/src/lib.rs, line 770

    /// Origin remain available to local CLI/curl clients; a foreign web page cannot silently mutate a

    crates/marrow-web/assets/dashboard.html, line 633

    const d = await (await fetch("/api/projects")).json();

    crates/marrow-web/assets/dashboard.html, line 652

    const response = await fetch(unified ? "/api/hive" : "/api/graph" + pq());

    crates/marrow-web/assets/dashboard.html, line 701

    const d = await (await fetch(url)).json();

  • Secrets

    Pass

    No read of a credential file or secret environment variable found.

  • Agent instructions

    Pass

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

  • Obfuscation

    Concern

    contains an encoded blob in a file that should be readable.

    OBFUSCATION_ENCODED_BLOB

    crates/marrow-store/src/integrity.rs, line 390

    let expected = "6d6172726f772d6d656d6f72792d63616e6f6e2d76310000000000000000073031464958454400000000000000086465636973696f6e000000000000000a7375706572736564656401000000000000000a6a

    assets/brand/icon.svg, line 1

    <svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" width="2000" zoomAndPan="magnify" viewBox="0 0 1500 1499.999933" height="2000" preserveAspectRati

    crates/marrow-web/assets/dashboard.html, line 7

    <link rel="icon" href="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAEAAAABACAIAAAAlC+aJAAAABmJLR0QA/wD/AP+gvaeTAAAEmElEQVRoge1aXWxTZRj+zk932i5b2fhpYYvDtSnNIm4BpMtmMnSWyBI2AWNiDIG

  • 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 9339f0c524d0. can delete files. install fetches a script from the network. The docs document an installer that pipes a download into a shell. can reach api.github.com. The description does not name that host. can reach a host that is not written as a fixed address. contains an encoded blob in a file that should be readable.

Date and source

Date checked:

View source

github.com

Commit graded: 9339f0c524d0816dc89c7389c1c8b8114e70e016

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