What is the consequence of having overlapping user roles in an application?

Having overlapping user roles in an application can lead to potential confusion and security flaws because when roles have overlapping permissions, it may create ambiguity about what users can and cannot do. This complexity can make it difficult for both users and administrators to understand the exact privileges associated with each role. Consequently, users might inadvertently gain access to areas or functionalities that should be restricted, leading to security vulnerabilities. Additionally, the overlap can create a situation where administrative actions, such as auditing or managing user permissions, become more challenging, potentially resulting in misconfigurations or unauthorized access.

In contrast, the other options imply benefits that do not typically arise from overlapping roles—such as increased control for administrators, effective access restrictions, or enhanced user satisfaction. These are often compromised in environments where roles lack clarity due to overlaps. Thus, it is crucial to clearly define roles to minimize confusion and enhance security in an application.