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CVE-2026-67432: CWE-770: Allocation of Resources Without Limits or Throttling in modelcontextprotocol ruby-sdkCVE-2026-67432 0 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. Join the discussion | CVE Database V5 | 07/29/2026, 19:17:46 UTC Added: 07/29/2026, 19:23:01 UTC |
CVE-2026-67431: CWE-284: Improper Access Control in modelcontextprotocol ruby-sdkCVE-2026-67431 0 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. Join the discussion | CVE Database V5 | 07/29/2026, 19:15:32 UTC Added: 07/29/2026, 19:23:01 UTC |
CVE-2026-67430: CWE-401: Missing Release of Memory after Effective Lifetime in modelcontextprotocol ruby-sdkCVE-2026-67430 0 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. Join the discussion | CVE Database V5 | 07/29/2026, 19:10:39 UTC Added: 07/29/2026, 19:23:01 UTC |
CVE-2026-63119: CWE-400: Uncontrolled Resource Consumption in modelcontextprotocol ruby-sdkCVE-2026-63119 0 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. Join the discussion | CVE Database V5 | 07/29/2026, 19:12:07 UTC Added: 07/29/2026, 19:23:01 UTC |
CVE-2026-63118: CWE-346: Origin Validation Error in modelcontextprotocol ruby-sdkCVE-2026-63118 0 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 validate the HTTP Host or Origin request headers, which allows a malicious browser page to use DNS rebinding to reach a locally running MCP server and invoke exposed tools. This issue is fixed in version 0.23.0. Join the discussion | CVE Database V5 | 07/29/2026, 19:07:33 UTC Added: 07/29/2026, 19:23:01 UTC |
Showing 1 to 5 of 5 results