CVE-2026-120333
Broken Access Control in extension "Frontend User Registration" (sf_register)
The actions linked in the emails of the extension (e.g. to confirm a registration or the deletion of an account) do not reject requests with a missing or invalid hash. Instead, the frontend user given in the request is used. Unauthenticated attackers can therefore perform these actions for arbitrary active frontend users. This allows them to retrieve the email address or username of all frontend users and to delete arbitrary frontend user accounts.
Fixes and workarounds
No remediation reported in collected sources.
Missing remediation information is not evidence that no patch exists.
Affected products and versions
| Product | Versions | Authority |
|---|---|---|
| Extension "Frontend User Registration" TYPO3 evoweb/sf-register
https://packagist.org/ |
≥ 14.0.0; < 14.0.3 (affected, semver) ≥ 0; < 13.2.5 (affected, semver) Other versions: unaffected |
CNA: TYPO3 |
Version ranges are source assertions. Check the vendor advisory and your installed configuration before determining exposure.
CVSS assessments
| Version / score | Vector | Authority |
|---|---|---|
| 4.0 / 8.8 high |
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:H/VA:N/SC:N/SI:N/SA:N | CNA: TYPO3 |
| 4.0 / 8.8 high |
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:H/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 | NVD: f4fb688c-4412-4426-b4b8-421ecf27b14a |
Exploit evidence
No exploit evidence in collected sources. This is not proof of no exploitation.
References
- https://typo3.org/security/advisory/typo3-ext-sa-2026-038CNA: TYPO3 · vendor-advisory
- https://typo3.org/security/advisory/typo3-ext-sa-2026-038f4fb688c-4412-4426-b4b8-421ecf27b14a
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