Executive Summary



This vulnerability is currently undergoing analysis and not all information is available. Please check back soon to view the completed vulnerability summary
Informations
Name CVE-2025-53366 First vendor Publication 2025-07-04
Vendor Cve Last vendor Modification 2025-07-04

Security-Database Scoring CVSS v3

Cvss vector : N/A
Overall CVSS Score NA
Base Score NA Environmental Score NA
impact SubScore NA Temporal Score NA
Exploitabality Sub Score NA
 
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Security-Database Scoring CVSS v2

Cvss vector :
Cvss Base Score N/A Attack Range N/A
Cvss Impact Score N/A Attack Complexity N/A
Cvss Expoit Score N/A Authentication N/A
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Detail

The MCP Python SDK, called `mcp` on PyPI, is a Python implementation of the Model Context Protocol (MCP). Prior to version 1.9.4, a validation error in the MCP SDK can cause an unhandled exception when processing malformed requests, resulting in service unavailability (500 errors) until manually restarted. Impact may vary depending on the deployment conditions, and presence of infrastructure-level resilience measures. Version 1.9.4 contains a patch for the issue.

Original Source

Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2025-53366

CWE : Common Weakness Enumeration

% Id Name
100 % CWE-248 Uncaught Exception

Sources (Detail)

https://github.com/modelcontextprotocol/python-sdk/commit/29c69e6a47d0104d0af...
https://github.com/modelcontextprotocol/python-sdk/pull/822
https://github.com/modelcontextprotocol/python-sdk/security/advisories/GHSA-3...
Source Url

Alert History

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0
Date Informations
2025-07-05 05:20:33
  • First insertion