An issue was discovered in Progress Sitefinity 13.3 before 13.3.7647, 14.0 before 14.0.7736, 14.1 before 14.1.7826, 14.2 before 14.2.7930, and 14.3 before 14.3.8025. There is potentially dangerous file upload through the SharePoint connector.
The product allows the upload or transfer of dangerous file types that are automatically processed within its environment.