Avoiding MCP Confused Deputy With AAuth
Read OriginalThis article examines the confused deputy attack vulnerability in the MCP (Model Context Protocol) authorization specification, which relies on OAuth 2.1 authorization code flow. It explains how AI agents dynamically discovering and calling tools can be tricked into providing valid tokens to attackers, even with TLS. The post details the attack mechanism, why current safeguards fail, and how Agent Auth (AAuth) protocol's resource tokens mitigate this at the protocol layer for modern AI agentic applications.
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