An authorization check is a component of a web application that stores the session state in a cookie that can be bypassed by an attacker. An authorization check verifies that the user has the appropriate permissions to access the requested resources or perform the desired actions. However, if the session state is stored in a cookie, an attacker can manipulate the cookie to change the user’s role or privileges, and bypass the authorization check. Therefore, it is recommended to store the session state on the server side, or use encryption and integrity protection for the cookie. References: Official (ISC)2 CISSP CBK Reference, Fifth Edition, Domain 8: Software Development Security, p. 1015; CISSP All-in-One Exam Guide, Eighth Edition, Chapter 8: Software Development Security, p. 503.