← Back

CVE-2026-25905

nvd nist
Published: Feb 9, 2026Modified: Jun 17, 2026Deferred

JSON object

Loading...
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 Python code being run by 'runPython' or 'runPythonAsync' is not isolated from the rest of the JS code, allowing any Python code to use the Pyodide APIs to modify the JS environment. This may result in an attacker hijacking the MCP server - for malicious purposes including MCP tool shadowing. Note - the "mcp-run-python" project is archived and unlikely to receive a fix.

Related CWEs

CWE-653
Improper Isolation or Compartmentalization
The product does not properly compartmentalize or isolate functionality, processes, or resources that require different privilege levels, rights, or permissions.

References (1)

Source: reefs@jfrog.com

Timeline

No history available yet.