An issue was discovered in Sage DPW 2020_06_x before 2020_06_002. The search field "Kurs suchen" on the page Kurskatalog is vulnerable to Reflected XSS. If the attacker can lure a user into clicking a crafted link, he can execute arbitrary JavaScript code in the user's browser. The vulnerability can be used to change the contents of the displayed site, redirect to other sites, or steal user credentials. Additionally, users are potential victims of browser exploits and JavaScript malware.