Description
The create and edit flows do not restrict which user properties may be submitted and do not enforce access control on the frontend user group assignment. As a result, an attacker can assign an arbitrary frontend user group to a newly registered or edited account, gaining unauthorized access to content and functionality restricted to privileged frontend user groups.
Problem types
Product status
14.0.0 (semver) before 14.0.2
Any version before 13.2.4
Credits
Seungbin Yang
Sebastian Fischer
References
typo3.org/security/advisory/typo3-ext-sa-2026-009