CVE-2026-46721
Broken Access Control in extension "Frontend User Registration" (sf_register)
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.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- Low
- Integrity
- Low
- Availability
- None
Exploit likelihood
What each source reports
CVE List Score used
6.9
Broken Access Control in extension "Frontend User Registration" (sf_register)
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.
- Record
CVE-2026-46721- CVSS 4.0
- 6.9 Medium
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 - Weakness
- CWE-915, CWE-639
- Updated
- 2026-11-02
EUVDEUVD-2026-30857
6.9
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.
- Record
EUVD-2026-30857- CVSS 4.0
- 6.9 Medium
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 - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-v348-vr4q-fv9p
6.9
TYPO3 sf_register extension allows unauthorized assignment of frontend user groups
The create and edit flows in the TYPO3 extension sf_register 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.
- Record
GHSA-v348-vr4q-fv9p- CVSS 4.0
- 6.9 Medium
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 - Weakness
- CWE-639
- Updated
- 2026-11-02
NVD
6.9
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.
- Record
CVE-2026-46721- CVSS 4.0
- 6.9 Medium
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X - Weakness
- CWE-639, CWE-915
- Updated
- 2026-11-02
OSV
6.9
Broken Access Control in extension "Frontend User Registration" (sf_register)
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.
- Record
CVE-2026-46721- CVSS 4.0
- 6.9 Medium
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 - Weakness
- CWE-639, CWE-915
- Updated
- 2026-11-02
OSVGHSA-v348-vr4q-fv9p
6.9
TYPO3 sf_register extension allows unauthorized assignment of frontend user groups
The create and edit flows in the TYPO3 extension sf_register 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.
- Record
GHSA-v348-vr4q-fv9p- CVSS 4.0
- 6.9 Medium
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 - Weakness
- CWE-639
- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
evoweb/sf-registerPackagist |
14.0.0 up to 14.0.2 | 14.0.2 |
evoweb/sf-registerPackagist |
before 13.2.4 | 13.2.4 |
evoweb/sf-registerPackagist |
14.0.0 up to 14.0.2, plus listed versions 14.0.1 |
14.0.2 |
evoweb/sf-registerPackagist |
before 13.2.4, plus listed versions 10.0.010.0.110.0.210.1.010.1.1 Show 45 moreShow less10.1.210.1.310.1.410.1.510.1.610.1.710.2.011.0.011.1.011.1.111.1.211.1.311.1.411.1.512.0.012.0.113.0.013.0.113.1.013.1.113.1.213.1.313.1.413.2.013.2.113.2.213.2.36.2.98.7.08.7.18.7.28.7.38.8.08.8.18.8.28.8.38.8.48.8.58.8.69.0.09.1.09.2.09.3.09.4.09.4.1 |
13.2.4 |
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2026-46721 is a medium vulnerability (CVSS 6.9) in Typo3 Extension "frontend User Registration", published May 19, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.36%, the 30th percentile. Fixed in evoweb/sf-register 14.0.2.
References
typo3.org/security/advisory/typo3-ext-sa-2026-009
nvd.nist.gov/vuln/detail/CVE-2026-46721
github.com/FriendsOfPHP/security-advisories/blob/master/evoweb/sf-register/CVE-2026-46721.yaml
github.com/advisories/GHSA-v348-vr4q-fv9p
packagist.org
github.com/CVEProject/cvelistV5/tree/main/cves/2026/46xxx/CVE-2026-46721.json
github.com/evoWeb/sf_register