Joomla! 3.8.2 is now available. This is a security release for the 3.x series of Joomla addressing three security vulnerabilities and fixing several bugs which were reported after the previous Joomla releases.
For full details visit the official posting
This is a minor update and should be taken care of automatically if you are using 8Dweb's CMSDefender
product. If you are on a different host, you should update immediately.