The PHP development team announces the immediate availability of PHP 5.4.23. About 10 bugs were fixed, including a security issue in OpenSSL module (CVE-2013-6420). All PHP 5.4 users are encouraged to upgrade to this version.
For source downloads of PHP 5.4.23 please visit our downloads page, Windows binaries can be found on windows.php.net/download/. The list of changes is recorded in the ChangeLog.