What’s Vulnerable › Vulnerabilities
CVE-2026-46721: Broken Access Control in extension "Frontend User Registration" (sf_register)
- Severity: medium (CVSS 6.9 v4.0)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.4% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-05-19 · updated 2026-10-26
- Weakness: CWE-639
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.
Affected products
- TYPO3 Extension "Frontend User Registration": from 14.0.0 before 14.0.2; before 13.2.4 — fixed in 13.2.4, 14.0.2
How to fix
Upgrade to a fixed version: TYPO3 Extension "Frontend User Registration" 13.2.4, 14.0.2. Check the vendor advisory for mitigations.
References
Get alerted when CVE-2026-46721 or the next vulnerability affects your stack