business-logic-attack

A business logic vulnerability is a flaw in an application's server-side rule enforcement, allowing attackers to manipulate transactional flows, payments, or account statuses without exploiting technical vulnerabilities.

You test e-commerce checkout flows by simulating price, quantity, and order_id changes in payment requests to verify if the server correctly validates the submitted data and prevents unauthorized alterations.

Detect coupon abuse by manipulating discount parameters and coupon codes in transactional flows to verify if the application properly validates user eligibility, usage limits, and server-side authentication.

No, this testing method requires no technical vulnerability exploitation, instead validating server-side checks, authentication, and input validation across e-commerce endpoints to detect order and payment logic flaws.

Test race conditions by sending concurrent requests targeting transactional flows and order processing endpoints to verify if the application enforces proper locking and prevents duplicate or unauthorized order submissions.

Yes, you can apply this approach to account-related endpoints by tampering with input parameters to detect improper authorization and confirm whether the server validates user permissions across all requests.