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.
{
"cpes": [
"cpe:2.3:a:joomla:joomla!:*:*:*:*:*:*:*:*"
],
"severity": "Medium"
}