We have released 2.5 to the community and are going to support both 2.4 and 2.5 together for the coming months (while we're actively developing the next release). Also, BigBlueButton 2.3 is now end of life.
As such, we recommend that all administrators deploy 2.5 going forward. You'll find [many improvements](https://docs.bigbluebutton.org/2.5/new.html) in this newer version.
If you believe you have found a security vunerability in BigBlueButton please let us know directly by e-mailing security@bigbluebutton.org with as much detail as possible.
