WordPress 4.1.2 is now available. This is a critical security release for all previous versions and we strongly encourage you to update your sites immediately.
WordPress versions 4.1.2 and earlier are affected by a critical cross-site scripting vulnerability, which could enable anonymous users to compromise a site.
WordPress also fixed three other security issues:
Download WordPress 4.1.2 or venture over to Dashboard → Updates and simply click “Update Now.” Sites that support automatic background updates are already beginning to update to WordPress 4.1.2.