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.
An issue was discovered in Joomla! 3.9.0 through 3.9.22. Improper handling of the username leads to a user enumeration attack vector in the backend login page.