🔓 IDOR / BOLA: How to Find the #1 API Vulnerability — and Actually Prove It
Broken Object Level Authorization — IDOR, to most of us — is the single most common serious bug in modern APIs. It sits at #1 on the OWASP API Security Top 10 (2023) , and it's the one I watch sail past a scanner, past a code review, and straight into production, where it lives for years. Not because it's clever. Because it's boring : the application carefully checks who you are , and then…
Broken Object Level Authorization (BOLA) is a common API vulnerability where an application exposes an object reference without proper authorization checks. This allows unauthorized users to access, modify, or delete data belonging to other users. This guide explains what BOLA is, how it works, how to find it, and how to prove it without compromising real user data.
Written by urgent.news from Dev.to's reporting — not their text. Machine-written — may contain errors; check the original before relying on it.
