Security Advisory

CVE-2026-67432

CVE vulnerability detail - eXtreme Datacenter Security Operations

Published 2026-07-29 19:17:46

Last updated 2026-07-29 19:34:24

Assigner GitHub_M

CVSS score not scored

State PUBLISHED

Description

MCP Ruby SDK is the official Ruby SDK for Model Context Protocol servers and clients. Prior to 0.23.0, MCP::Server::Transports::StreamableHTTPTransport in the mcp gem reads and parses an entire JSON-RPC POST body without a size limit, allowing an unauthenticated remote attacker to exhaust process memory. This issue is fixed in version 0.23.0.

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