An issue was discovered in Joomla! 2.5.0 through 3.10.6 & 4.0.0 through 4.1.0. A user row was not bound to a specific authentication mechanism which could under very special circumstances allow an account takeover.
{
"cpes": [
"cpe:2.3:a:joomla:joomla!:*:*:*:*:*:*:*:*"
],
"severity": "Critical"
}