PT-2026-53152

The MCP SSE server started via ToolsMCPServer.run sse / launch tools mcp servertransport="sse" binds to 0.0.0.0 by default and builds its Starlette application with no authentication middleware and no Origin-header validation. The module mcp/mcp security.py provides exactly the needed controls...

CVE-2026-33252

A flaw was found in the Go MCP SDK's Streamable HTTP transport, which uses Go's standard encoding/json package. In deployments without authorization, a remote attacker can exploit this Cross-Site Request Forgery CSRF vulnerability. By sending browser-generated cross-site POST requests to a local...