Improper Neutralization of Input During CMS Backend (adminstrative section) Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Progress Sitefinity.This issue affects Sitefinity: from 4.0 through 14.4.8142, from 15.0.8200 through 15.0.8229, from 15.1.8300 through 15.1.8327, from 15.2.8400 through 15.2.8421.