CVE-2026-46721 MEDIUM

CVE-2026-46721: Broken Access Control in extension "Frontend User Registration" (sf_register)

Vendor Typo3
Product Extension "Frontend User Registration"
Weakness CWE-915
Published May 19, 2026
Last update May 19, 2026

CVSS base score

6.9/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality
Integrity

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

May 19, 2026 CVE published
May 19, 2026 Record updated