Grades are a hygiene check, not a security guarantee.

MCP, MCP server

Abnormal MCP Server

A secure, open-source Model Context Protocol server for Abnormal Security.

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 4870e74458ae, unchanged since the check below.

PERMISSION_SHELL_UNDECLARED INSTALL_REMOTE_SCRIPT

Why this grade

  • PERMISSION_SHELL_UNDECLARED Medium

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

    scripts/mcp-verify/main.go, line 23 cmd := exec.Command(root+"/bin/abnormal-mcp", "serve")

  • 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 32 curl -sSfL https://raw.githubusercontent.com/anchore/syft/main/install.sh | sh -s -- -b /usr/local/bin

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

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

    PERMISSION_SHELL_UNDECLARED

    scripts/mcp-verify/main.go, line 23

    cmd := exec.Command(root+"/bin/abnormal-mcp", "serve")

  • Install and update

    Serious

    install fetches a script from the network.

    INSTALL_REMOTE_SCRIPT

    .github/workflows/release.yml, line 32

    curl -sSfL https://raw.githubusercontent.com/anchore/syft/main/install.sh | sh -s -- -b /usr/local/bin

  • Network

    Pass

    No network call found.

  • Secrets

    Concern

    reads a credential or environment file.

    SECRETS_ENV_READ SECRETS_PATH_DOTENV

    internal/config/config.go, line 41

    APIToken: strings.TrimSpace(os.Getenv("ABNORMAL_API_TOKEN")),

    internal/config/dotenv.go, line 10

    // loadDotEnvFiles loads KEY=VALUE pairs from the first existing .env file.

    internal/config/dotenv.go, line 26

    paths = append(paths, filepath.Join(cwd, ".env"))

    Show more

    internal/config/dotenv.go, line 31

    filepath.Join(exeDir, ".env"),

    internal/config/dotenv.go, line 32

    filepath.Join(exeDir, "..", ".env"),

    scripts/mcp-serve.sh, line 5

    if [[ -f .env ]]; then

    scripts/mcp-serve.sh, line 8

    source .env

    scripts/mcp-verify.sh, line 2

    # Quick sanity check: MCP stdio server lists tools (expects make build + .env).

    scripts/mcp-verify.sh, line 12

    if [[ ! -f "$ROOT/.env" ]]; then

  • 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 4870e74458ae. requests shell access. No manifest field names shell or command execution. install fetches a script from the network. reads a credential or environment file.

Date and source

Date checked:

View source

github.com

Commit graded: 4870e74458ae3d7f9148be3d5274dc933506b9aa

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