broken-access-control

Broken access control occurs when web applications fail to properly enforce role-based permissions or ownership checks, allowing horizontal and vertical privilege escalation through missing authorization gates on protected API endpoints and resources.

Prevent IDOR vulnerabilities by gating every resource lookup with an ownership predicate before returning data, ensuring backend endpoints verify that the requesting user owns the resource or holds the required role.

Centralize role-based access control by attaching reusable authorization middleware to protected routes, enforcing role checks consistently across API endpoints rather than scattering access validation logic within individual request handlers.

Return a 404 instead of a 403 for denied access to prevent resource enumeration, obscuring whether the resource actually exists and protecting sensitive endpoint data from attackers probing API structures.

Yes, this approach is designed for backend APIs and services relying on per-user ownership or role-based access, applying ownership gates before data is returned to enforce secure authorization.

Relying solely on middleware can leave vulnerabilities if resource-specific ownership checks are skipped inside endpoints, requiring developers to explicitly gate data lookups alongside centralized role enforcement to fully mitigate privilege escalation.