Authorization bypass is a security vulnerability where an attacker gains access to resources or functions in a system without proper permission checks. This flaw occurs when software fails to verify whether a user has the right to perform certain actions, allowing unauthorized users to view, modify, or delete sensitive data. Authorization bypass can lead to serious consequences, including data breaches and loss of system integrity. Preventing this issue requires strict enforcement of access controls and regular security testing to ensure that only authorized users can access protected areas or functions.