Exploiting IDOR Vulnerabilities

When to Use

• During authorized penetration tests when testing access control on resource endpoints
• When APIs or web pages use predictable identifiers (numeric IDs, UUIDs, slugs) in URLs or request bodies
• For validating that object-level authorization is enforced across all CRUD operations
• When testing multi-tenant applications where users should only access their own data
• During bug bounty programs targeting broken access control vulnerabilities

Prerequisites

• Authorization: Written penetration testing agreement for the target application
• Burp Suite Professional: With Authorize extension installed from BApp Store
• Two test accounts: At least two separate user accounts with different permission levels
• Burp Authorize Extension: For automated IDOR testing across sessions
• curl/httpie: For manual request crafting
• Browser: Configured to proxy through Burp Suite