The PHP development team announces the immediate availability of PHP 5.5.28. 12 security-related issues were fixed in this release. All PHP 5.5 users are encouraged to upgrade to this version.
According to our release calendar, this PHP 5.5 version is the first security release of the PHP 5.5 branch. This and all the following releases of this branch do not contain bugfixes that are not considered relevant for security. PHP 5.5 users that need further bugfixes are encouraged to upgrade to PHP 5.6.
For source downloads of PHP 5.5.28 please visit our downloads page, Windows binaries can be found on windows.php.net/download/. The list of changes is recorded in the ChangeLog.