CVE-2018-19141

Open Ticket Request System (OTRS) 4.0.x before 4.0.33 and 5.0.x before 5.0.31 allows an admin to conduct an XSS attack via a modified URL because user and customer preferences are mishandled.

CVE-2018-16586

In Open Ticket Request System (OTRS) 4.0.x before 4.0.32, 5.0.x before 5.0.30, and 6.0.x before 6.0.11, an attacker could send a malicious email to an OTRS system. If a logged in user opens it, the email could cause the browser to load external image or CSS resources.

CVE-2018-19142

Open Ticket Request System (OTRS) 6.0.x before 6.0.13 allows an admin to conduct an XSS attack via a modified URL.