| Package | Affected versions | Patched versions |
|---|---|---|
| typo3/cms-core | ≥ 13.0.0, < 13.1.1 | 13.1.1 |
| typo3 | ≥ 13.0.0, < 13.1.1 | 13.1.1 |
The history backend module is vulnerable to HTML injection. Although Content-Security-Policy headers effectively prevent JavaScript execution, adversaries can still inject malicious HTML markup. Exploiting this vulnerability requires a valid backend user account.
Update to TYPO3 version 13.1.1 that fixes the problem described.
Thanks to TYPO3 core team member Andreas Kienast who reported this issue and to TYPO3 core & security team Benjamin Franzke who fixed the issue.
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