Search Results (3 CVEs found)

CVE Vendors Products Updated CVSS v3.1
CVE-2026-67430 1 Modelcontextprotocol 1 Ruby-sdk 2026-07-30 5.3 Medium
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 does not expire sessions by default, so repeated initialize requests retain unbounded ServerSession objects and can exhaust process memory. This issue is fixed in version 0.23.0.
CVE-2026-67431 1 Modelcontextprotocol 1 Ruby-sdk 2026-07-30 N/A
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 does not bind a session ID to a session owner, allowing an attacker with a stolen session ID to send tools/call requests that execute in the victim's session. This issue is fixed in version 0.23.0.
CVE-2026-63119 1 Modelcontextprotocol 1 Ruby-sdk 2026-07-29 6.2 Medium
MCP Ruby SDK is the official Ruby SDK for Model Context Protocol servers and clients. Prior to 0.23.0, MCP::Server::Transports::StdioTransport and MCP::Client::Stdio in the mcp gem use IO#gets without a byte limit, allowing a peer that sends data without a newline to exhaust process memory. This issue is fixed in version 0.23.0.