Cross-Site Scripting (XSS) attacks occur when malicious scripts are injected into web applications, and these scripts are then executed in the context of the user's browser. To mitigate XSS attacks, it is essential to properly filter and sanitize user inputs to prevent the injection of malicious scripts. Using a third-party library to filter input to the application is a common and effective measure to address this threat, as such libraries are specifically designed to identify and neutralize potentially harmful inputs.