CVE-2026-46721

Broken Access Control in extension "Frontend User Registration" (sf_register)

Published May 19, 2026 CVSS 4.0 · 6.9 Medium EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Github GHSA Github GHSA GHSA-v348-vr4q-fv9p TYPO3 sf_register extension allows unauthorized assignment of frontend user groups
History
Type Values Removed Values Added
First Time appeared Typo3
Typo3 extension "frontend User Registration"
Vendors & Products Typo3
Typo3 extension "frontend User Registration"
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
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.
Title Broken Access Control in extension "Frontend User Registration" (sf_register)
Weaknesses CWE-639
CWE-915
References
Metrics cvssV4_0

{'score': 6.9, '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'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
TYPO3
Published
Updated
May 19, 2026, 1:21 PM
Reserved
May 16, 2026, 9:55 AM
Status
Deferred
Published
May 19, 2026, 10:16 AM
Modified
Oct 26, 2026, 1:10 PM