BBC News - Firm scrambles to patch vBulletin software flaw Very serious flaw in vBulletin 3.8.6, upgrade now if you already haven't (or delete faq.php for a quick fix)
Whats sad - the world news reported the security hole the same day that I got an email from vbulletin. It was 6 - 8 hours later that I could get my forum updated.