As Joomla 3.4.6 released to patch a critical vulnerability that affects all versions from 1.5 to 3.4, you need to update you Joomla website immediately. This article will show you how to check whether your site is affected or not.
You're highly recommended to update your site with Joomla 3.4.6. This Joomla release addresses a critical security vulnerability and 4 low level security vulnerabilities that affects all versions from 1.5 to 3.4 without any other changes compared to Joomla 3.4.5.