Open Ticket Request System (OTRS) 4.0.x before 4.0.33, 5.0.x before 5.0.31, and 6.0.x…
Open Ticket Request System (OTRS) 4.0.x before 4.0.33, 5.0.x before 5.0.31, and 6.0.x before 6.0.13 allows an authenticated user to delete files via a modified submission form because upload caching is mishandled.