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Aashish-32

cve-lookup-mcp

by Aashish-32
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Python
Remote

cve-lookup-mcp

An MCP server that gives AI assistants live access to CVE data from the National Vulnerability Database (NVD) and FIRST EPSS — no API key required.

Built for use with Claude Code and any other Model Context Protocol compatible client.

Tools

Tool

Description

lookup_cve

Full details for a CVE — CVSS score, description, affected products, EPSS exploitation probability, references

search_cves

Search NVD by keyword with optional severity and year filters

check_product_cves

Find all HIGH/CRITICAL CVEs for a vendor/product (useful during version fingerprinting)

Example prompts

Look up CVE-2022-41352
Search for critical Zimbra RCE vulnerabilities from 2022
Check CVEs for apache struts

Related MCP server: CVE Intelligence MCP Server

Installation

Option 1 — pipx (recommended)

pipx install cve-lookup-mcp

Option 2 — pip

pip install cve-lookup-mcp

Option 3 — run from source

git clone https://github.com/Aashish-32/cve-lookup-mcp
cd cve-lookup-mcp
pip install -e .

Configuration

Add to your ~/.claude.json (Claude Code) or equivalent MCP client config:

{
  "mcpServers": {
    "cve-lookup": {
      "command": "cve-lookup-mcp",
      "args": []
    }
  }
}

If installed from source, point directly at the script:

{
  "mcpServers": {
    "cve-lookup": {
      "command": "python3",
      "args": ["/path/to/cve-lookup-mcp/src/cve_lookup_mcp/server.py"]
    }
  }
}

Restart your MCP client after adding the config.

Data sources

Source

What it provides

Rate limit

NVD API v2

CVE details, CVSS scores, affected products

~5 req/30s (no key), 50 req/30s (with key)

FIRST EPSS API

Exploitation probability score

None

NVD API key (optional)

Without a key, NVD allows roughly 5 requests per 30 seconds. For heavier use, request a free API key from NVD and set it as an environment variable:

{
  "mcpServers": {
    "cve-lookup": {
      "command": "cve-lookup-mcp",
      "env": {
        "NVD_API_KEY": "your-key-here"
      }
    }
  }
}

Development

git clone https://github.com/Aashish-32/cve-lookup-mcp
cd cve-lookup-mcp
python3 -m venv .venv
source .venv/bin/activate
pip install -e .

Run the server manually (stdio mode):

cve-lookup-mcp

Test with a raw JSON-RPC call:

echo '{"jsonrpc":"2.0","id":1,"method":"initialize","params":{"protocolVersion":"2024-11-05","capabilities":{},"clientInfo":{"name":"test","version":"1"}}}' \
  | cve-lookup-mcp

License

MIT

Install Server
A
license - permissive license
A
quality
C
maintenance

How are these scores calculated?

Maintenance

–Maintainers
–Response time
–Release cycle
–Releases (12mo)
Commit activity

Resources

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Tools

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