5 articles tagged with ""idor""
Insecure Direct Object References are embarrassingly easy to exploit and shockingly common in production APIs. One wrong endpoint and any user can read—or delete—everyone else's data. Let's fix that.
Change one number in a URL and suddenly you're reading someone else's medical records. IDOR is embarrassingly simple, devastatingly common, and pays out big on bug bounties. Let's break it down.
You built an API. You tested it. Everything works. Then a hacker changes ?user_id=123 to ?user_id=124 and downloads someone else's data. Welcome to IDOR — the embarrassingly simple bug that haunts production apps worldwide.
You built an API. You added authentication. You feel safe. But one tiny URL like /api/orders/1337 could hand all your users' data to a random stranger. Welcome to IDOR - the embarrassingly simple bug that breaks into Fortune 500 companies daily.
The simplest hack that still works in 2026: just change a number in the URL. Here's why your API is probably leaking user data right now and how to actually fix it.