2026-03-27 21:20:07
GitHub_M
PUBLISHED
MCP Ruby SDK is the official Ruby SDK for Model Context Protocol servers and clients. Prior to version 0.9.2, the Ruby SDKs streamable_http_transport.rb implementation contains a session hijacking vulnerability. An attacker who obtains a valid session ID can completely hijack the victims Server-Sent Events (SSE) stream and intercept all real-time data. Version 0.9.2 contains a patch.