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MCP Ruby SDK - Insufficient Session Binding Allows SSE Stream Hijacking via Session ID Replay

🗓️ 27 Mar 2026 00:00:00Reported by RubySecType 
rubygems
 rubygems
🔗 rubysec.com👁 7 Views

Ruby SDK SSE hijacking via session ID replay due to missing session binding and single stream.

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27 Mar 2026 00:00Current
5.8Medium risk
Vulners AI Score5.8
CVSS 3.15.9
CVSS 48.2
EPSS0.00465
SSVC
7