MailEnable before 8.60 allows Directory Traversal for reading the messages of other users, uploading files, and deleting files because "/../" and "/.. /" are mishandled.
https://www.nccgroup.trust/uk/our-research/multiple-vulnerabilities-in-mailenable/
https://web.archive.org/web/20150329173628/http://www.mailenable.com/Standard-ReleaseNotes.txt