Reflected Cross-Site Scripting (XSS) vulnerability in Kelio Visio 1, Kelio Visio X7 and Kelio Visio X4, in versions between 3.2C and 5.1K. This vulnerability could allow an attacker to execute a JavaScript payload by making a POST request and injecting malicious code into the editable ‘username’ parameter of the ‘/PageLoginVisio.do’ endpoint.