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GHSA-3QHF-M339-9G5V MCP Python SDK vulnerability in the FastMCP Server causes validation error, leading to DoS

🗓️ 04 Jul 2025 22:06:49Reported by GoogleType 
osv
 osv
🔗 osv.dev👁 4 Views

Validation error in MCP Python server causes unhandled exception and 500 errors, causing service DoS.

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16 Jul 2026 18:45Current
5.8Medium risk
Vulners AI Score5.8
CVSS 48.7
EPSS0.05693
4