Apache OpenMeetings 1.0.0 uses not very strong cryptographic storage, captcha is not used in registration and forget password dialogs and auth forms missing brute force protection.
Apache OpenMeetings 1.0.0 is vulnerable to SQL injection. This allows authenticated users to modify the structure of the existing query and leak the structure of other queries being made by the application in the back-end.
Apache OpenMeetings 1.0.0 doesn't check contents of files being uploaded. An attacker can cause a denial of service by uploading multiple large files to the server.
Cross-site scripting (XSS) vulnerability in the SWF panel in Apache OpenMeetings before 3.1.2 allows remote attackers to inject arbitrary web script or HTML via the swf parameter.