If you have an IRC client you can join us on the IRC channel by connecting your client to irc.freenode.net and joining #mybb. You can also connect using the webchat below.
MyBB Staff are voiced (+) in the channel, and are probably around to talk to as well as other MyBB users.
You must not disclose vulnerabilities in MyBB within the IRC Channel. Instead, please see the Security Research page for information on how to responsibly disclose vulnerabilities.
Please also see the #mybb IRC Channel Rules page which documents the etiquette that you must follow in the channel.