CVE-2023-47125: TYPO3 Html Sanitizer

Medium severity, CVSS 6.1. EPSS: 0.6% chance of exploitation in the next 30 days.

TYPO3 is an open source PHP based web content management system released under the GNU GPL. In affected versions DOM processing instructions are not handled correctly. This allows bypassing the cross-site scripting mechanism of typo3/html-sanitizer. This vulnerability has been addressed in versions 1.5.3 and 2.1.4. Users are advised to upgrade. There are no known workarounds for this vulnerability.

Affected products

• TYPO3 Html Sanitizer: from 1.0.0, before 1.5.3 (fixed in 1.5.3); from 2.0.0, before 2.1.4 (fixed in 2.1.4)
• TYPO3 TYPO3: from 8.7.42, before 8.7.55 (fixed in 8.7.55); from 9.5.29, before 9.5.44 (fixed in 9.5.44); from 10.4.19, before 10.4.41 (fixed in 10.4.41); from 11.3.2, before 11.5.33 (fixed in 11.5.33); from 12.0.0, before 12.4.8 (fixed in 12.4.8)

Published 2023-11-14. Last modified 2026-06-17.