New vulnerabilities
MAY have been found in several third party components used widely in Joomla.
If you have Joomla sites, I'd suggest checking this post from Alledia.com on the problems.
Are You Selling Fear or Solutions?
The title is referring to how notification of the
possible security flaw was handled.
edit- As more information is available- some of the original reports of vulnerabilities have been removed from the original posters website. If this report turns out to be bogus (or confirmed) I'll update this thread.