Improper Isolation or Compartmentalization Affecting mcp-run-python package, versions [0,]
Threat Intelligence
Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
Do your applications use this vulnerable package?
In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.
Test your applications- Snyk IDSNYK-PYTHON-MCPRUNPYTHON-15250553
- published9 Feb 2026
- disclosed9 Feb 2026
- creditUnknown
Introduced: 9 Feb 2026
CVE-2026-25905 (opens in a new tab)How to fix?
There is no fixed version for mcp-run-python.
Overview
mcp-run-python is a Model Context Protocol server to run Python code in a sandbox.
Affected versions of this package are vulnerable to Improper Isolation or Compartmentalization via the runPython or runPythonAsync functions. An attacker can gain unauthorized access to and manipulate the server environment by executing arbitrary Python code that interacts with the JavaScript context.