Kliqqi CMS 3.5.2 has XSS via a crafted group name in pligg/groups.php, a crafted Homepage string in a profile, or a crafted string in Tags or Description within pligg/submit.php.
https://euvd.enisa.europa.eu/vulnerability/EUVD-2017-9036
https://edricteo.com/kliqqi-cms-xss-vulnerability-in-version-3.5.2/