IDOR Vulnerability Case Study: Real Bug Bounty Walkthrough on Broken Access Control

APIs are everywhere — and so are their vulnerabilities.

In this exclusive case study, I reveal how I uncovered a critical IDOR (Insecure Direct Object Reference) vulnerability in a production application’s Password Bank feature. This bug allowed unauthorized deletion of sensitive credentials, even after my access had been revoked!

👉 Read the full blog here →

What you’ll learn from this real-world bug bounty writeup:

• ✅ What IDOR vulnerabilities look like in modern APIs
• ✅ How broken access control and privilege escalation often go undetected
• ✅ A step-by-step breakdown of the exact API requests used to exploit the bug
• ✅ How developers can fix and prevent these issues
• ✅ Bonus: My methodology and tools like Burp Suite, Postman, and curl

🔍 If you’re a bug bounty hunter, ethical hacker, or developer — this deep-dive is for you.

Learn how a hidden DELETE API led to full data deletion abuse and what lessons developers should take away to prevent such broken access control flaws in production.