Server side cross-site scripting In typo3/cms-core

Description

TYPO3 vulnerable to an HTML Injection in the History Module

Problem

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.

Solution

Update to TYPO3 version 13.1.1 that fixes the problem described.

Credits

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

References

Mitigation

Update Impact

Minimal update. May introduce new vulnerabilities or breaking changes.

Ecosystem
Package
Affected version
Patched versions
FLAT-G42W4 – Vulnerability | Fluid Attacks Database