Report: CVE-2026-33946 - MCP Ruby SDK: Insufficient Session Binding Allows SSE Stream Hijacking via Sessi

Report: CVE-2026-33946 - MCP Ruby SDK: Insufficient Session Binding Allows SSE Stream Hijacking via Sessi

CVE ID :CVE-2026-33946 Published : March 27, 2026, 9:20 p.m. | 32 minutes ago Description :MCP Ruby SDK is the official Ruby SDK for Model Context Protocol servers and clients. Prior to version 0.9.2, the Ruby SDK's streamable_http_transport.rb implementation contains a session hijacking vulnerability. An attacker who obtains a valid session ID can completely hijack the victim's Server-Sent Events (SSE) stream and intercept all real-time data. Version 0.9.2 contains a patch. Severity: 0.0 | NA Visit the link for more details, such as CVSS details, affected products, timeline, and more...

CVE Details

Published
March 27, 2026