Nop Kier all ready mentioned about 3.6.6 in 3.6.5 release announcement.
Quote:
Originally Posted by Kier
A Note Regarding vBulletin 3.6.6
The publication of this exploit has required a swift release of an updated version to fix the published problem. The original intention for vBulletin 3.6.5 had been to include a number of other bug fixes and improvements that have been reported since 3.6.4.
Unfortunately, the necessity of bringing out a version quickly to fix the exploit has meant that many of these fixes have not had sufficient time to be fully tested to the extent that we would like and have therefore been kept back for vBulletin 3.6.6.