PHP 5.5.7 is released, the new version is already available in custombuild. Here is changelog: http://www.php.net/ChangeLog-5.php#5.5.7 Here is quote from http://php.net:
The PHP development team announces the immediate availability of PHP 5.5.7. This release fixes some bugs against PHP 5.5.6 and it also includes a fix for CVE-2013-6420 in OpenSSL extension. All users are strongly encouraged to upgrade.