As is mentioned on the main PHP.net site today PHP 5.4.14 and 5.3.24 have been released:
The PHP development team announces the immediate availability of PHP 5.4.14 and PHP 5.3.24. These releases fix about 10 bugs aswell as upgrading the bundled PCRE library. All users of PHP are encouraged to upgrade to PHP 5.4.14.
Users are encouraged to update to this latest release. You can find the latest version either on the downloads page (source) or the Windows site (binaries). If you're curious what all changed in this release, check out the Changelog.