It has been discovered that TYPO3 CMS is vulnerable to cross-site scripting.

Problem Description

The form manager backend module is vulnerable to cross-site scripting. Exploiting this vulnerability requires a valid backend user account with access to the form module.


Update to TYPO3 versions 9.5.48 ELTS, 10.4.45 ELTS, 11.5.37 LTS, 12.4.15 LTS, 13.1.1 that fix the problem described.


Thanks to TYPO3 core & security team member Benjamin Franzke who reported and fixed the issue.

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.