A file upload vulnerability was discovered in the file path /bl-plugins/backup/plugin.php on Bludit version 3.12.0. If an attacker is able to gain Administrator rights they will be able to use unsafe plugins to upload a backup file and control the server.

Bludit 3.12.0 allows admins to use a /plugin-backup-download?file=../ directory traversal approach for arbitrary file download via backup/plugin.php.

Bludit 3.12.0 allows stored XSS via JavaScript code in an SVG document to bl-kernel/ajax/logo-upload.php.

showAlert() in the administration panel in Bludit 3.12.0 allows XSS.