Improper input handling in the 'Host Header' allows an unauthenticated attacker to store a payload in web application logs. When an Administrator views the logs using the application's standard functionality, it enables the execution of the payload, resulting in Stored XSS or 'Cross-Site Scripting'.
The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.