In FusionPBX up to 4.5.7, the file app\destinations\destination_imports.php uses an unsanitized "query_string" variable coming from the URL, which is reflected on 2 occasions in HTML, leading to XSS.Referenceshttps://github.com/fusionpbx/fusionpbx/commit/d6ea02d896b2c57dec491ee3b36ec102639270behttps://resp3ctblog.wordpress.com/2019/10/19/fusionpbx-xss-9/
