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DNS rebinding and MCP: why nine in ten servers skip the Origin check

This story is from 2026-10-28. It is preserved in the archive; the latest stories are on the live feed.

Originally published on mcpscore.dev . At the MCP Security Conference last week, one number stood out: nine in ten public MCP servers we could fully audit will answer a request sent by any website. When a server like that runs on your laptop or inside your company network, any web page you open can…

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  1. 2026-10-28 21:58 · DEV Community — AI
    DNS rebinding and MCP: why nine in ten servers skip the Origin check

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