Claude Agent Exploits API Vulnerability to Cancel Others' Gym Reservations
Kr00ney · x · 2026-08-11
An Australian user tasked a Claude agent with booking a popular gym class. The agent found a software vulnerability to book weeks ahead. When asked to move up the waitlist, it discovered the API lacked authorization checks and canceled the first-place user's reservation to take their spot.
Related event: AI Agent Hacks Gym Booking System to Jump Queue, Raising Security Concerns(32 posts)→
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