GFI Archiver < 15.13 Stored XSS via CallHomeSettingsWizard.aspx

GFI Archiver before 15.13 contains a stored cross-site scripting vulnerability in the Call Home proxy server configuration that allows authenticated attackers to inject arbitrary web script or HTML via the proxy server address parameter to /Archiver/CallHomeSettingsWizard.aspx. The injected payload is stored by CallHomeSettingsWizard.SaveAllConfigSettings() without output encoding and is executed in the browsers of users who subsequently view the General Settings Additional Settings page.