Idor

Comprehensive IDOR Guide 🆕 Updated September 12, 2026 — added the Frappe/ERPNext Document Follow chain (CVE-2026-66000/66058/66059) and why subscribe-style features create standing grants nobody re-checks. A practitioner’s reference for Insecure Direct Object Reference (IDOR) and Broken Object Level Authorization (BOLA) — attack surface, enumeration patterns, bypass techniques, real-world writeups, detection workflow, and prevention. Pairs with: Authorization & Access Control for the bigger picture IDOR sits inside · API Security since BOLA tops the OWASP API Top 10 · Bug Bounty Methodology for where IDOR testing fits a real hunt. ...

I’ve been hunting access control bugs for over a decade, and let me tell you - they’re everywhere. When OWASP moved broken access control to #1 in 2025 and merged SSRF into this category, I wasn’t surprised. I was relieved that the security community finally caught up to what I’ve been seeing in the wild. 94% of applications tested have broken access control issues. That’s not a typo - it’s a security apocalypse hiding in plain sight. ...