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EPSS MCP Server

by kodamap
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Python
Remote

1. EPSS MCP Server

Note: The major design of code in this repository is based on EPSS-MCP.

2. Features

EPSS MCP Server provides the following features:

  • Retrieve vulnerability details (including description, CWE, and CVSS scores) from the NVD API, and EPSS scores and percentiles from the EPSS API.

  • Retrieve EPSS scores for multiple CVEs.

  • Retrieve the EPSS time series data for a single CVE.

  • Retrieve the top N CVEs with the highest EPSS scores.

3. Run MCP Server on Docker

Note: If you want to change transport type, edit Dockerfile like this.

# Stdio transport(Default)
CMD ["python3", "epss_mcp.py", "--transport", "stdio"]
# SSE transport
CMD ["python3", "epss_mcp.py", "--transport", "sse"]
# Streamable HTTP transport
CMD ["python3", "epss_mcp.py", "--transport", "http"]

Build docker image

cd epss-mcp
docker build -t epss-mcp .

Run MCP server

# Stdio transport
docker run --rm -i epss-mcp

# SSE transport (Access from localhost only is recommended)
docker run -d -p 127.0.0.1:8000:8000 epss-mcp

# Streamable HTTP transport (Access from localhost only is recommended)
docker run -d -p 127.0.0.1:8000:8000 epss-mcp

4. Installation

4.1. Stdio

Prepare a Python virtual environment using uv. See uv for more details. 

curl -LsSf https://astral.sh/uv/install.sh | sh
uv sync
. .venv/bin/activate

Cursor, Windsurf

{
  "mcpServers": {
    "epss-mcp": {
      "command": "docker",
      "args": [
        "run",
        "--rm",
        "-i",
        "epss-mcp"
      ]
    }
  }
}

Related MCP server: CVE Intelligence MCP Server

4.2. Streamable HTTP, SSE

Cursor

{
  "mcpServers": {
    "epss-mcp": {
      "url": "http://localhost:8000/mcp"
    }
  }
}

Windsurf

serverUrl is your server URL or IP address. 

{
  "mcpServers": {
    "epss-mcp": {
      "serverUrl": "http://localhost:8000/sse"
    }
  }
}

Windsurf supports two transport types for MCP servers: stdio and /sse https://docs.windsurf.com/windsurf/cascade/mcp

5. Tool Examples

This example is simply demonstrating how each function works, so it's executed using a Python script as the MCP client. (You can use them via an LLM through editors like Cursor or Windsurf.)

Note: MCP client for testing purposes. (Gemini API Key required)

export GOOGLE_API_KEY=<your api key>

Start the MCP server with stdio transport

$ uv run client/client.py epss-mcp/epss_mcp.py

Connected to server with tools: ['get_cve_info', 'top_epss_cves']

MCP Client Started!
Type your queries or `quit` to exit.

Query:

5.1. Get EPSS Score of single CVE

Query: Get EPSS of CVE-2025-33053
> Thinking...

 [Calling tool get_cve_info with args {'cve_id': 'CVE-2025-33053'}]
The EPSS score for CVE-2025-33053 is 0.41763, and the percentile is 97.264.

5.2. Get EPSS Score of multiple CVEs

Query: Get EPSS of CVE-2025-33053, CVE-2025-21298
> Thinking...

 [Calling tool get_cve_info with args {'cve_id': 'CVE-2025-33053,CVE-2025-21298'}]
CVE-2025-33053 has an EPSS score of 0.41763 and is in the 97.264 percentile. CVE-2025-21298 has an EPSS score of 0.70558 and is in the 98.593 percentile.

5.3. Get EPSS Score of multiple CVEs with time series

Query: Get time series of CVE-2025-33053 with table format

> Thinking...

 [Calling tool get_cve_info with args {'cve_id': 'CVE-2025-33053', 'time_series': True}]
Here is the time series data for CVE-2025-33053 in a table format:

| Date       | EPSS       | Percentile |
|------------|------------|------------|
| 2025-07-07 | 0.417630000 | 0.972650000 |
| 2025-07-06 | 0.37155000 | 0.96976000 |
| 2025-07-01 | 0.32398000 | 0.96662000 |
| 2025-06-30 | 0.30219000 | 0.96437000 |
| 2025-06-23 | 0.15008000 | 0.94213000 |
| 2025-06-18 | 0.16497000 | 0.94551000 |
| 2025-06-16 | 0.18266000 | 0.94860000 |
| 2025-06-15 | 0.32831000 | 0.96637000 |
| 2025-06-13 | 0.27895000 | 0.96193000 |
| 2025-06-12 | 0.53232000 | 0.97806000 |
| 2025-06-11 | 0.54359000 | 0.97862000 |

5.4. Get top 5 CVEs with the highest EPSS scores

uv run client_stdio.py ../epss-mcp/epss_mcp.py --top_n 5

> Thinking...

 [Calling tool top_epss_cves with args {'top_n': 5}]
Here are the top 5 CVEs with the highest EPSS scores:
CVE-2023-42793, EPSS score: 0.94584, EPSS percentile: 100.0
CVE-2024-27198, EPSS score: 0.94577, EPSS percentile: 100.0
CVE-2023-23752, EPSS score: 0.94532, EPSS percentile: 100.0
CVE-2024-27199, EPSS score: 0.94489, EPSS percentile: 99.99900000000001
CVE-2018-7600, EPSS score: 0.94489, EPSS percentile: 99.99900000000001

6. Reference

This server cannot be installed

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license - not found
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quality - not tested
D
maintenance

How are these scores calculated?

Maintenance

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

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