CustomLabs
Security & governance

Confused Deputy

A confused deputy is a component tricked into using more authority than a request deserves.

The MCP version runs through a gateway holding one delegated token for several downstream servers.

Forwarding that token unchecked lets the least-trusted server act with permissions the original grant never covered.

The fix is validating that a token names the receiving server, and never forwarding it elsewhere.

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Source: https://customlabs.io/glossary/confused-deputy/

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