A new version of Firefox was released yesterday. It's available on the official Mozilla website and through the update check in Firefox itself. Two critical, five moderate and two low security vulnerabilities have been fixed in the new version which makes it a recommended update for all Firefox users.
Fixed in Firefox 22.214.171.124
MFSA 2007-36 URIs with invalid %-encoding mishandled by Windows
MFSA 2007-35 XPCNativeWrapper pollution using Script object
MFSA 2007-34 Possible file stealing through sftp protocol
MFSA 2007-33 XUL pages can hide the window titlebar
MFSA 2007-32 File input focus stealing vulnerability
MFSA 2007-31 Browser digest authentication request splitting
MFSA 2007-30 onUnload Tailgating
MFSA 2007-29 Crashes with evidence of memory corruption (rv:126.96.36.199)
Get Firefox 188.8.131.52 here.