The PHP development team announces the immediate availability of PHP 5.5.22 and 5.4.38. This release fixes several bugs and addresses CVE-2015-0235 and CVE-2015-0273. All PHP 5.5 and 5.4 users are encouraged to upgrade to this version.
As always, you can get the latest source downloads from the downloads page or Windows users can get the binaries from windows.php.net. Those interested in the complete list of fixes in these releases can check out the latest entries in the Changelog.