Joomla 3.9.21 is now available. This is a security release for the 3.x series of Joomla which addresses 3 security vulnerabilities and contains over 20 bug fixes and improvements.
What's in 3.9.21?
Joomla 3.9.21 includes 3 security vulnerability fixes and addresses several bugs, including:
Security Issues Fixed
Low Priority - Core - XSS in mod_latestactions (affecting Joomla! 3.9.0 through 3.9.20)
Low Priority - Core - Open redirect in com_content vote feature (affecting Joomla! 3.0.0 through 3.9.20)
Low Priority - Core - Directory traversal in com_media (affecting Joomla! 2.5.0 through 3.9.20)