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XBOW: What Is IDOR, and How Do You Test for It?

XBOW's Offensive Security Academy post explains Insecure Direct Object Reference (IDOR) vulnerabilities including read, write, file, API, and multi-step-workflow variants, and why they resist traditional scanners since they require reasoning about object-level authorization rather than pattern matching. It walks through prevention guidance such as server-side authorization checks and avoiding client-supplied identifiers, then details a case study where XBOW's autonomous AI pentesting platform found two previously unknown IDORs in Spree Commerce: an unauthenticated address-edit bypass via cookie manipulation, and a multi-cart cross-reference flaw exposing another customer's address, both fixed in Spree v5.2.5.