The Romanian Security Team (RST) is the Romania 's Task Force published in a public view the exploit that allows SQL injection in the newer version of the vBulletin platform.
Nytro, one of the group members, posted the exploit on his team's forum, with several details of how an attacker could access a vBulletin database of 5.x.
The code and all the details are provided for free, while at the same time other groups are selling zero-day $2.000 to Bitcoin.
VBulletin for its part immediately responded and released a patch one day after publishing RST on their forum.