Firefox just released its v188.8.131.52 version.
If you are not reminded to upgrade, you can click Help >> Check for Updates to find the new update.
After update, my Alexa plugin has also updated to 1.1.
Firefox fixed following bugs in this release.
MFSA 2007-25 XPCNativeWrapper pollution
MFSA 2007-24 Unauthorized access to wyciwyg:// documents
MFSA 2007-23 Remote code execution by launching Firefox from Internet Explorer
MFSA 2007-22 File type confusion due to %00 in name
MFSA 2007-21 Privilege escalation using an event handler attached to an element not in the document
MFSA 2007-20 Frame spoofing while window is loading
MFSA 2007-19 XSS using addEventListener and setTimeout
MFSA 2007-18 Crashes with evidence of memory corruption