Story · Simon Willison
OpenClaw turns a missing authorization check into a real-world gym-booking exploit (Simon Willison)
blog post · Story page
OpenClaw found that an Australian gym-booking API has zero authorization checks on cancelling other people's reservations, then proved it by cancelling the booking of the person at waitlist position #1, moving its own user from fourth to third. A small flaw, a real-world consequence, and an agent that found both.
Appeared in
- An independent harness matches DeepSeek's 82.7%, and agents outrun their verifiers
Aug 10, 2026 · in the sections
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