An update to Joomla has been released:
Joomla! 3.4.2 Released (joomla.org)
The Joomla! Project and the Production Leadership Team are proud to announce the release of Joomla! 3.4.2. This is a security release for the 3.x series of Joomla! This release fixes two low level security issues.
What's in 3.4?
The 3.4 release introduces new features into the CMS such as improved front end module editing, decoupling of weblinks, composer integration, Google new reCaptcha and security improvements by implementing UploadShield code which can detect most malicious uploads by examining their filenames and file contents.
We highly suggest performing this upgrade since there are low level security issues. As a reminder, "low level" means in the core code. It means deep. It does not mean the risk is low or anything like that but the complete opposite.
The previous update to Joomla was on April 16th.
Our Website Maintenance Department will be in contact with all of our clients running Joomla regarding these upgrades.
Joomla! 3.4.3 Released (joomla.org)
Joomla 3.4.3 is now available. This is a maintenance release for the Joomla 3 series. We strongly encourage you update your sites.