Approov Blog

BOLA

Broken Object Level Authorization (BOLA) is the #1 vulnerability in the OWASP API Security Project’s API Security Top Ten in 2019. Using BOLA, an attacker exploits a vulnerable API endpoint by manipulating an arbitrary object identifier to exfiltrate or manipulate data they are not authorized to access. Authorization schemes can be complex, and it is easy for an API developer to miss an authorization check when the application state is passed between client and service. Read Full Story