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.

Affected: Packagist: in2code/femanager

The TYPO3 Extension femanager prior to versions 5.5.2, 6.3.3, and 7.0.1 is vulnerable to broken access control. The `usergroup.inList` validation can be bypassed resulting in new frontend users created by the extension may be members of groups that are restricted. The vulnerability is only exploitable if the field usergroup is available in the registration form. Versions 5.5.2, 6.3.3, and 7.0.1 contain patches.