Vulnerability in Dulldusk's PHP File Manager affecting version 1.7.8. This vulnerability consists of an XSS through the fm_current_dir parameter of index.php. An attacker could send a specially crafted JavaScript payload to an authenticated user and partially hijack their browser session.
https://www.incibe.es/en/incibe-cert/notices/aviso/cross-site-scripting-php-file-manager-dulldusk