services/system_io/actionprocessor/System.rails in ConnectWise Manage 2017.5 is vulnerable to Cross-Site Request Forgery (CSRF), as demonstrated by changing an e-mail address setting.
services/system_io/actionprocessor/Contact.rails in ConnectWise Manage 2017.5 allows arbitrary client-side JavaScript code execution (involving a ContactCommon field) on victims who click on a crafted link, aka XSS.