Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') vulnerability in Apache OpenMeetings. This issue affects Apache OpenMeetings: from 5.0.0 before 9.1.0. An attacker with moderator rights in any room can read arbitrary files accessible to the OS account running the OM server, including credentials and secrets, via a crafted download request. Users are recommended to upgrade to version 9.1.0, which fixes the issue.