The femanager extension before 5.5.2, 6.x before 6.3.3, and 7.x before 7.0.1 for TYPO3 allows creation of frontend users in restricted groups (if there is a usergroup field on the registration form). This occurs because the usergroup.inList protection mechanism is mishandled.
{
"versions": [
{
"introduced": "0"
},
{
"fixed": "5.5.2"
},
{
"introduced": "6.0.0"
},
{
"fixed": "6.3.3"
},
{
"introduced": "0"
},
{
"last_affected": "7.0.0"
}
]
}