A business logic vulnerability is a flaw in the design and implementation of an application's processes or workflows. Unlike typical security bugs, these vulnerabilities arise when attackers exploit legitimate features or actions in unintended ways, bypassing business rules or security controls. This can lead to unauthorized actions, such as manipulating prices, bypassing authentication, or abusing discounts. Business logic vulnerabilities are challenging to detect with automated tools since they depend on the application's unique logic and intended behavior. Preventing such vulnerabilities requires a deep understanding of the application's business processes and thorough testing to ensure all flows follow intended rules and restrictions.