Zend Framework 2.5.2 (2015-08-03)
ZendXml runs a heuristic detection for XML Entity Expansion and XML eXternal Entity vectors when under php-fpm, due to issues with threading in libxml preventing using that library's built-in mechanisms for disabling them. However, the heuristic was determined to be faulty when multibyte encodings are used for the XML. This release contains a patch to ensure that the heuristic will work with multibyte encodings.
If you use Zend Framework components that utilize DOMDocument or SimpleXML (which includes
Zend\Feed, and several others), and deploy using php-fpm in production (or plan to), we recommend upgrading immediately.