← Database

CVE-2026-67432

HIGH CVSS: 7.5 Published: 2026-07-29 Modified: 2026-07-30

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.

Affected Platforms

Unknown

Weakness Type

CWE-770

References