CVE-2026-25904

Overly permissive Deno configuration in mcp-run-python leads to SSRF

CVSS 5.8 MEDIUMEPSS 0.2%CWE-918

Vexday Risk Score

13Bajo

Decisión SSVC (CISA)

Track

Sin señal de explotación → monitorear

CVSS 5.8EPSS 0.2%KEV nãoPoC —Nuclei —Metasploit —Patch —

Ciclo de vida

09 feb 2026Publicada en NVD

Recomendación: Monitorear — sin señal de explotación por ahora.

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:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:L

Productos afectados

mcp-run-python

Referencias

https://research.jfrog.com/vulnerabilities/mcp-run-python-deno-ssrf-jfsa-2026-001653029/