The PHP development team announces the immediate availability of PHP 5.5.18. Several bugs were fixed in this release. A regression in OpenSSL introduced in PHP 5.5.17 has also been addressed in this release. PHP 5.5.18 also fixes 4 CVEs in different components. All PHP 5.5 users are encouraged to upgrade to this version. For source downloads of PHP 5.5.18 please visit our downloads page, Windows binaries can be found on windows.php.net/download/. The list of changes is recorded in the ChangeLog.