mcp-oauth-mcpserver-blueprint

Critical vulnerabilities exist in the current implementation that make it unsafe for production or external deployment: In-memory OAuth session storage (lost on restart, not scalable, susceptible to session fixation/hijacking); lack of robust server-side token expiry validation and automated refresh; and missing rate limiting. The default HTTP transport is unencrypted, exposing OAuth tokens and making it vulnerable to Man-in-the-Middle attacks if not behind a secure HTTPS reverse proxy (explicitly warned in documentation). Additionally, input validation is not comprehensive for all tool parameters, and audit logging is missing. Generic exception catching is also present in some areas.