CVE-2026-25904

Published: Feb 9, 2026Modified: Feb 9, 2026

5.8

Vector

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

Exploitability: 1.6 / Impact: 3.7

Source: reefs@jfrog.com (Secondary)

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.

Related CWEs

CWE-918

Server-Side Request Forgery (SSRF)

The web server receives a URL or similar request from an upstream component and retrieves the contents of this URL, but it does not sufficiently ensure that the request is being sent to the expected destination.

References (1)

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

Source: reefs@jfrog.com

Timeline (4)

2/9/2026

4 changes

New CVE Received - Reference

09:16 AM

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

New CVE Received - CWE

09:16 AM

- -
+ CWE-918

New CVE Received - CVSS V3.1

09:16 AM

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

New CVE Received - Description

09:16 AM

- -
+ 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.