[assassingod]

http://www.vbulletin.com/forum/showthread.php?t=125480

[high]This is a CRITICAL update[/high]

vBulletin 3.0.5 has been released due to a serious security flaw in all vBulletin 3 versions, including 3.0.4

It is a critical update and is recommended you upgrade immediately .

Important information about the vulnerability can be found in the thread, link at the top of this post:

Important Warning About Sensitive Data

Due to the nature of the vulnerability discovered in vBulletin 3, and as part of our ongoing effort to maximize security, we must assume that one or all of the vBulletin servers may have been compromised.

Therefore, we would STRONGLY RECOMMEND that any customers who may have submitted sensitive data; such as vBulletin admin control panel or server login details, to Jelsoft staff in the past should take steps to alter these details, so that any information that may have been accessed by an unauthorized party could not be used.

Discussion about the thread is here