WordPress 4.3.1 is now available. This is a security release for all previous versions and we strongly encourage you to update your sites immediately.
This release addresses three issues, including two cross-site scripting vulnerabilities and a potential privilege escalation.
Download WordPress 4.3.1 or venture over to Dashboard → Updates and simply click “Update Now.” Sites that support automatic background updates are already beginning to update to WordPress 4.3.1.
Thanks to everyone who contributed to 4.3.1:
I have updated the latest version now.