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The MCP Vulnerability That Lives Between Servers, Not In One

This story is from 2026-08-30. It is preserved in the archive; the latest stories are on the live feed.

Most MCP security writeups (including a few of mine) focus on a single server: does this one tool description contain a hidden instruction, does this one manifest request too many scopes. That's the easy case to scan for because everything you need is in one file. The case that's harder to catch, a…

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  1. 2026-08-30 16:20 · DEV Community — AI
    The MCP Vulnerability That Lives Between Servers, Not In One

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