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

CVE ID : CVE-2026-25904

Published : Feb. 9, 2026, 8:51 a.m. | 28 minutes ago

Description : 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.

Severity: 5.8 | MEDIUM

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