Mozilla Firefox 3.0.8 fixes more than just attack code that was released by security researcher Guido Landi. It also patches the flaw exploited by the German hacker who used it to win the Pwn2Own contest, according to PCWorld. Both flaws are considered "critical."
Version 3.0.8 was originally due out early this week. But Mozilla decided to release the patches early, calling it a "high-priority fire-drill security update," reports The H Security. You can find release notes for Firefox 3.0.8 here.
The next Firefox update is expected to be released on April 21.