access-idor

To test for IDOR vulnerabilities, you need to systematically probe identifier surfaces across REST, GraphQL, gRPC, and WebSocket interfaces. This process validates object-level authorization to ensure strict tenant and role isolation between accounts.

An Insecure Direct Object Reference (IDOR) vulnerability occurs when unauthorized users can access or manipulate objects belonging to other accounts. It exists due to missing object-level authorization controls, allowing cross-account data manipulation.

You validate object-level authorization by performing cross-account validation between defined test accounts. This involves systematic probing of identifier surfaces on a target API endpoint to confirm access control enforcement and detect unauthorized data access.

Yes, performing an IDOR pentest requires defined test accounts and an explicitly authorized scope. You must have at least two distinct accounts to systematically test if Account-A can access or modify objects owned by Account-B.

Yes, differential analysis detects subtle IDOR leaks by examining timing, response size, and transport-specific behavior across GraphQL and gRPC. This method identifies unauthorized data exposure even without direct object manipulation.

You document IDOR findings by generating a structured role-pair matrix that records evidence collection. This matrix documents the impact, confidence levels, and cross-account validation results for your security assessment report.