In FusionPBX up to v4.5.7, the file app\conferencesactive\conferenceinteractive.php uses an unsanitized "c" variable coming from the URL, which is reflected in HTML, leading to XSS.
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2019-16989.json"
[ { "events": [ { "introduced": "0" }, { "last_affected": "4.5.7" } ] } ]