AI audit agent fires 200 concurrent requests to find a race condition no scanner catches
Ok-Library1020 · reddit · 2026-11-13
Testing Cloudflare's security-audit-skill on a personal project, the author found a race condition no scanner would flag: auth middleware validated the token while the export-route handler fired the DB query before validation finished propagating in the session cache — a millisecond-scale window.
The agent ran automatic concurrency testing, fired 200 simultaneous requests, and pulled another user's export twice. It wasn't a permission bypass or injection, just timing — invisible to static access-rule scanners and human reviewers.
The takeaway: most security audits assume an attacker following a checklist, but agents test combinations instead of rules. These bugs likely exist in far more systems than we think.
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