Ampache is a web based audio/video streaming application and file manager. Stored Cross Site Scripting (XSS) vulnerability in ampache before v6.3.1 allows a remote attacker to execute code via a crafted payload to serval parameters in the post request of /preferences.php?action=admin_update_preferences. This vulnerability is fixed in 6.3.1.
https://github.com/ampache/ampache/security/advisories/GHSA-prw2-7cr3-5mx8