Broken Access Control in extension "Frontend User Registration" (sf_register)
Priority LOW 36CWE-639Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- Security bypass, Tampering
- Confidentiality · integrity · availability
- Low · Low · None
- Fix status
- Fixed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA and GitHub. Impact type from CWE-639 and CWE-915.
Summary
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.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00362 30th percentileScored 2026-11-07
Fix Fixed Extension "Frontend User Registration" (TYPO3): 14.0.2, 13.2.4evoweb/sf-register (Packagist): 14.0.2, 13.2.4
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| TYPO3 | Extension "Frontend User Registration" | 14.0.0 to before 14.0.2; before 13.2.4 | 14.0.2, 13.2.4 | Patch available | CNA |
| — | evoweb/sf-register (Packagist) | 14.0.0 to before 14.0.2 | 14.0.2 | Patch available | GHSA-v348-vr4q-fv9p |
| — | evoweb/sf-register (Packagist) | before 13.2.4 | 13.2.4 | Patch available | GHSA-v348-vr4q-fv9p |
- Extension "Frontend User Registration" VendorTYPO3 Affected 14.0.0 to before 14.0.2; before 13.2.4 Fixed in 14.0.2, 13.2.4 Patch available CNA
- evoweb/sf-register (Packagist) Vendor— Affected 14.0.0 to before 14.0.2 Fixed in 14.0.2 Patch available GHSA-v348-vr4q-fv9p
- evoweb/sf-register (Packagist) Vendor— Affected before 13.2.4 Fixed in 13.2.4 Patch available GHSA-v348-vr4q-fv9p
Remediation
- Fix · CNA Extension "Frontend User Registration" (TYPO3) Fixed in 14.0.2, 13.2.4
- Fix · GHSA-v348-vr4q-fv9p evoweb/sf-register (Packagist) Fixed in 14.0.2 Advisory →
- Fix · GHSA-v348-vr4q-fv9p evoweb/sf-register (Packagist) Fixed in 13.2.4 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2026-46721
- 2026-10-03 Alias added: GHSA-v348-vr4q-fv9p
References
More TYPO3 vulnerabilities
- TI-2023-10314 Persisted Cross-Site Scripting in Frontend Rendering in typo3 CVSS 3.1HIGH 8.8
- TI-2010-03538 The jumpUrl (aka access tracking) implementation in tslib/class.tslib_fe.php in TYPO3… CVSS 2.0HIGH 7.1
- TI-2009-00775 The jumpUrl mechanism in class.tslib_fe.php in TYPO3 3.3.x through 3.8.x, 4.0 before… CVSS 2.0MEDIUM 5.0
- TI-2025-30547 The sr_feuser_register extension through 12.4.8 for TYPO3 allows Remote Code Execution. CVSS 3.1CRITICAL 10.0
- TI-2019-08867 The PharStreamWrapper (aka phar-stream-wrapper) package 2.x before 2.1.1 and 3.x before… CVSS 3.1CRITICAL 9.8
- TI-2008-04019 Unspecified vulnerability in the TYPO3 Secure Directory (kw_secdir) extension before… CVSS 2.0HIGH 10.0
Sources
- CVE-2026-46721 · CVE Program
- CVE-2026-46721 · NVD
- FIRST EPSS
- GHSA-v348-vr4q-fv9p · GitHub Advisory Database · CC BY 4.0
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