The Open Microscopy Environment OMERO.web version prior to 5.4.7 contains an Information Exposure Through Log Files vulnerability in the login form and change password form that can result in User's password being revealed. Attacker can log in as that user. This attack appear to be exploitable via an attacker reading the web server log. This vulnerability appears to have been fixed in 5.4.7.
In OMERO 5.3.3 or earlier a user could create an OriginalFile and adjust its path such that it now points to another user's file on the underlying filesystem, then manipulate the user's data.