Joomla! 3.9.15 Security Release announced
Joomla! 3.9.15 is a Security Release which addresses THREE security vulnerabilities.
This release also includes several improvements.
See the Release Notes at the link below.
Core - CSRF in batch actions (affecting Joomla 3.0.0 through 3.9.14).
Core - CSRF com_templates LESS compiler (affecting Joomla 3.0.0 through 3.9.14).
Core - XSS in com_actionlogs (affecting Joomla 3.9.0 through 3.9.14).
Back up before updating is highly recommended
Protect your assets.
Perform a FULL backup of your website (database and files) BEFORE updating the Joomla! CMS and/or its extensions.