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CVE-2026-25904

CVE-2026-25904 · Overly permissive Deno configuration in mcp-run-python leads to SSRF

This page contains facts from public vulnerability sources. Check the original advisory before updating.

The Pydantic-AI MCP Run Python tool configures the Deno sandbox with an overly permissive configuration that allows the underlying Python code to access the localhost interface of the host to perform SSRF attacks. Note - the "mcp-run-python" project is archived and unlikely to receive a fix.

CVSS 5.8 · Medium · EPSS 0.2%

Published
Updated

Stack: python

Affected products and versions

  • mcp-run-python PyPI

    Versions
    • 0.0.1
    • 0.0.2
    • 0.0.20
    • 0.0.21
    • 0.0.22
    Affected ranges
    • ECOSYSTEM: ≤ 0.0.22

    No fix published

Original sources

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