CVE-2025-53366
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.
Vendor
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Product
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CWE
Yayın Tarihi
2025-07-04 22:15:22
Güncelleme
2025-07-08 16:18:53
Source Identifier
security-advisories@github.com
KEV Date Added
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