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.
CVSS
No CVSS.
References
Configurations
No configuration.
History
04 Jul 2025, 22:15
Type | Values Removed | Values Added |
---|---|---|
New CVE |
Information
Published : 2025-07-04 22:15
Updated : 2025-07-04 22:15
NVD link : CVE-2025-53366
Mitre link : CVE-2025-53366
CVE.ORG link : CVE-2025-53366
JSON object : View
Products Affected
No product.
CWE
CWE-248
Uncaught Exception