dev.to· Oct 21, 2026· by krishna_kumar_75bdf350b26

🔓 IDOR / BOLA: How to Find the #1 API Vulnerability — and Actually Prove It

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Broken Object Level Authorization is #1 on the OWASP API Security Top 10 — and the bug that passes scanners and code review alike. Here's how to find it, and the part most write-ups skip: how to prove it without touching a single real user's data.
🎯 Vulnerability: Insecure Direct Object Reference (IDOR)
💡 Defense Fix: Enforce object-level access control checks (ABAC/RBAC) on the server side for every API request.
#security#api#bugbounty#webdev