Xibo is an open source digital signage platform with a web content management system and Windows display player software. Prior to 4.4.3, missing access-control checks on "GET /dataset/export/csv/{id}" allow an authenticated user to export data from any dataset, including datasets created by administrators, by iterating over "sequential dataset IDs". Exploitation requires access to the privilege allowing edits, including deletion, to all created "DataSets" independently of Layouts. This privilege is not granted to non-administrators as standard. This issue is fixed in version 4.4.3.