hunt-idor

To test for IDOR vulnerabilities across multi-tenant applications, replay a known victim object ID under an attacker account across HTTP methods to confirm real state or data differences, checking for a meaningful data or state differential like a 200 response versus an expected 403 or 404.

To find IDOR vulnerabilities in GraphQL APIs, use GraphQL introspection combined with ID substitution to detect cross-user access when queries reference object IDs directly, validating unauthorized reads, writes, or destructive actions across tenant boundaries.

The best way to validate IDOR findings for bug bounty reports is to pass a reproducibility gate that confirms a meaningful data or state differential. This involves replaying victim object IDs as an attacker and documenting the exact difference between expected authorization and observed responses.

Yes, you can use two-account replay with method tampering to detect insecure direct object references. By authenticating as one user and replaying requests referencing another user's object IDs, you can identify route-level or object-level authorization failures.

Yes, IDOR hunting works with sequential integers, UUIDs, or leaked identifiers. It detects cross-user access by validating requests that reference object IDs directly, applying to both REST and GraphQL hunting scenarios where unauthorized reads or writes may occur.

An IDOR test returning a 200 instead of an expected 403 indicates an insecure direct object reference vulnerability, confirming a route-level or object-level authorization gap that allows unauthorized access to another user's data across tenant boundaries.