- Component Type: TYPO3 CMS
- Subcomponent: DataHandler (ext:core)
- Release Date: May 20, 2025
- Vulnerability Type: Broken Authentication
- Affected Versions: 10.4.0-10.4.49, 11.0.0-11.5.43, 12.0.0-12.4.30, 13.0.0-13.4.11
- Severity: High
- Suggested CVSS: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
- References: CVE-2025-47940, CWE-283
Problem Description
Administrator-level backend users without system maintainer privileges can escalate their privileges and gain system maintainer access. Exploiting this vulnerability requires a valid administrator account.
Solution
Update to TYPO3 versions 10.4.50 ELTS, 11.5.44 ELTS, 12.4.31 LTS, 13.4.12 LTS that fix the problem described.
Credits
Thanks to Alexander Künzl for reporting this issue, and to TYPO3 core & security team member Oliver Hader for fixing it.
General Advice
Follow the recommendations that are given in the TYPO3 Security Guide. Please subscribe to the typo3-announce mailing list.
General Note
All security-related code changes are tagged so you can easily look them up in our review system.