Model Context Protocol · weakness class

Input Validation and Logic

3 CVEs

Every dot is a CVE in what this vendor ships; the named ones are the most at risk.

Every one of the 3 is a mark on the map. Named now: 1 to 3, most at risk first.

MCP SDK Vulnerable to FastMCP Server Validation Error, Leading to Denial of ServiceCVE-2025-53366modelcontextprotocol · CVSS 8.7 · 9.8% likely
CWE-248
MCP Python SDK has Unhandled Exception in Streamable HTTP Transport ,Leading to Denial of ServiceCVE-2025-53365modelcontextprotocol · CVSS 8.7 · 0.4% likely
CWE-248
MCP Go SDK Vulnerable to Improper Handling of Case SensitivityCVE-2026-27896modelcontextprotocol · CVSS 7.2 · 0.3% likely
CWE-178

exploited in the wildcheck availableringed, named or not: CyberSIXT has reported on it

Zoom in on the map and the dots under the middle of it are named where they are.

Data as of 2026-11-15. CVE List through 2026-11-15 · EPSS of 2026-11-14 · CISA KEV checked 2026-11-15. Sources: the CVE List, CISA KEV, EPSS, NVD, nuclei templates and public bug bounty data.