Grades are a hygiene check, not a security guarantee.

MCP, MCP server

MCPower Security Proxy

Real-time semantic security for AI coding agents and MCP tools in VS Code, Claude Code and Cursor.

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 b6415f684b80, unchanged since the check below.

PERMISSION_SHELL_UNDECLARED INSTALL_REMOTE_SCRIPT OBFUSCATION_MINIFIED_PAYLOAD

Why this grade

  • PERMISSION_SHELL_UNDECLARED Medium

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

    src/modules/ui/xdialog/__init__.py, line 29 proc = subprocess.Popen(('which', cmd), stdout=subprocess.PIPE, stderr=subprocess.DEVNULL, shell=False)

  • 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).

    targets/scripts/setup-uvx-linux.sh, line 15 curl -LsSf https://astral.sh/uv/install.sh | sh >/dev/null 2>&1

  • OBFUSCATION_MINIFIED_PAYLOAD Medium

    Contains a very long line with almost no spaces in a script or style file.

    src/modules/redaction/gitleaks_rules.py, line 707 re.compile(r'\bZXlK(?:(aGJHY2lPaU)|(aGNIVWlPaU)|(aGNIWWlPaU)|(aGRXUWlPaU)|(aU5qUWlP)|(amNtbDBJanBi)|(amRIa2lPaU)|(bGNHc2lPbn)|(bGJtTWlPaU)|(cWEzVWlPaU)|(cWQyc2lPb)|(cGMzTWlPaU)|(cG

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. can delete files.

    PERMISSION_SHELL_UNDECLARED PERMISSION_DELETE_FILES

    src/modules/ui/xdialog/__init__.py, line 29

    proc = subprocess.Popen(('which', cmd), stdout=subprocess.PIPE, stderr=subprocess.DEVNULL, shell=False)

    src/modules/ui/xdialog/mac_dialogs.py, line 8

    proc = subprocess.Popen(

    src/modules/ui/xdialog/yad_dialogs.py, line 47

    proc = subprocess.Popen(

    Show more

    src/modules/ui/xdialog/zenity_dialogs.py, line 42

    proc = subprocess.Popen(

    targets/common-ts/watcher/index.test.ts, line 61

    await fs.rm(testDir, { recursive: true, force: true });

    targets/common-ts/watcher/index.test.ts, line 115

    await fs.unlink(testFile1);

    targets/common-ts/watcher/index.test.ts, line 340

    await fs.unlink(testFile1);

    targets/scripts/clean-build.js, line 144

    fs.rmSync(filePath, { recursive: true, force: true });

  • Install and update

    Serious

    install fetches a script from the network.

    INSTALL_REMOTE_SCRIPT

    targets/scripts/setup-uvx-linux.sh, line 15

    curl -LsSf https://astral.sh/uv/install.sh | sh >/dev/null 2>&1

    targets/scripts/setup-uvx-macos.sh, line 15

    curl -LsSf https://astral.sh/uv/install.sh | sh >/dev/null 2>&1

  • Network

    Concern

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

    NETWORK_NO_FIXED_HOST

    targets/scripts/update-gitleaks-rules.mjs, line 17

    const response = await fetch(GITLEAKS_TOML_URL);

    targets/vsc-extension/src/api.ts, line 46

    const response = await fetch(`${apiUrl}/client-state`, {

  • Secrets

    Concern

    reads a credential or environment file.

    SECRETS_PATH_DOTENV

    targets/vsc-extension/src/configurationMonitor/index.ts, line 376

    const extensionHost = this.vscode?.env.appName?.toLowerCase() ?? "_unknown";

    targets/vsc-extension/src/configurationMonitor/index.ts, line 380

    `Detecting AI client: appName="${this.vscode?.env.appName ?? "_unknown"}", execPath="${process.execPath}"`

    .gitignore, line 55

    .yarn-integrity

    Show more

    .gitignore, line 56

    .env

    .gitignore, line 57

    .env.development.local

    .gitignore, line 58

    .env.test.local

    .gitignore, line 59

    .env.production.local

  • Agent instructions

    Pass

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

  • Obfuscation

    Concern

    contains a minified payload.

    OBFUSCATION_MINIFIED_PAYLOAD

    src/modules/redaction/gitleaks_rules.py, line 707

    re.compile(r'\bZXlK(?:(aGJHY2lPaU)|(aGNIVWlPaU)|(aGNIWWlPaU)|(aGRXUWlPaU)|(aU5qUWlP)|(amNtbDBJanBi)|(amRIa2lPaU)|(bGNHc2lPbn)|(bGJtTWlPaU)|(cWEzVWlPaU)|(cWQyc2lPb)|(cGMzTWlPaU)|(cG

    targets/package-lock.json, line 1

    {

  • 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 b6415f684b80. requests shell access. No manifest field names shell or command execution. 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. contains a minified payload.

Date and source

Date checked:

View source

github.com

Commit graded: b6415f684b808face91fd5b35f22835fd076171c

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