In FusionPBX up to 4.5.7, the file app\extensions\extensionimports.php uses an unsanitized "querystring" variable coming from the URL, which is reflected in HTML, leading to XSS.
[ { "events": [ { "introduced": "0" }, { "last_affected": "4.5.7" } ] } ]
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2019-16977.json"