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Researchers Got Six Agent Frameworks to Run an Attacker's Tool Call

calendar_today October 14, 2026 person Johannes Keienburg domain cakewalk

Researchers say six agent frameworks ran a tool call an attacker asked the model to repeat, in a paper posted October 9, 2026. Across 273 open-source MCP servers, they confirmed 253 bugs in 118 where a tool did not enforce the input rules its own description sets.

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