Piwigo v12.2.0 was discovered to contain SQL injection vulnerability via the Search function.
Piwigo v12.2.0 was discovered to contain a SQL injection vulnerability via pwg.users.php.
Piwigo v12.2.0 was discovered to contain an information leak via the action parameter in /admin/maintenanceactions.php.
Piwigo version 12.2.0 is vulnerable to stored cross-site scripting (XSS), which can lead to privilege escalation. In this way, admin can steal webmaster's cookies to get the webmaster's access.