An issue was discovered in Joomla! 2.5.0 through 3.9.22. The globlal configuration page does not remove secrets from the HTML output, disclosing the current values.
An issue was discovered in Joomla! 2.5.0 through 3.9.22. The folder parameter of mod_random_image lacked input validation, leading to a path traversal vulnerability.
An issue was discovered in Joomla! 3.0.0 through 3.9.22. Improper filter blacklist configuration leads to a SQL injection vulnerability in the backend user list.
In Joomla! before 3.9.19, lack of input validation in the heading tag option of the "Articles - Newsflash" and "Articles - Categories" modules allows XSS.