Smoothwall Express 3.1 'time.cgi' Cross-Site Scripting

Smoothwall Express 3.1-SP4-polar-x86_64-update9 contains a reflected cross-site scripting vulnerability that allows unauthenticated attackers to inject malicious scripts by manipulating the NTP_SERVER parameter. Attackers can send POST requests to the time.cgi endpoint with script payloads in the NTP_SERVER parameter to execute arbitrary JavaScript in users' browsers.