This is a security release for the 3.x series and it only contains the security fixes, no other changes have been made. It is strongly suggested that you update your Joomla! website to the latest version.
You can find more info about these issue at the Joomla! release news page.
We have released Bitnami Joomla! 3.6.5 Docker image, cloud images, installers and virtual machines that fix these issues.Do you already have a Joomla! installation? You can follow our guide about how to upgrade your application and you won't have to worry about these vulnerabilities.
If you have further questions about Bitnami Joomla! or this security issue, please post to our community forum, and we would be happy to help you.