To avoid any security issues on your website you have to make sure that you keep you CMS (Content Management System) and its plugins up to date. Here are the list of latest version of most popular CMS
Wordpress https:
Drupal https:
Joomla https:
Opencart https:
Prestashop https:
Phpbb https:
Drupal https:
Magento https:
Oscommerce https:
Phplist https:
Coppermine http:
Owncloud https:
Vtiger https:
Mediawiki https:
Very useful tips. Thank you for sharing these great tips on keeping your CMS up to date.