Macallan Mail Solution 2.8.4.6 (Build 260), and possibly earlier versions, allows remote attackers to bypass authentication in the web interface via an HTTP GET request with two slashes ("//") after the server name.

Multiple directory traversal vulnerabilities in the IMAP service in Macallan Mail Solution before 4.8.05.004 allow remote authenticated users to read e-mails of other users or create, modify, or delete directories via a .. (dot dot) in the argument to the (1) CREATE, (2) SELECT, (3) DELETE, or (4) RENAME commands.