CVE-2026-47347: TYPO3 CMS

Medium severity, CVSS 5.3. EPSS: 0.5% chance of exploitation in the next 30 days.

Applications that use GeneralUtility::sanitizeLocalUrl to allow only local URLs are vulnerable to open redirect attacks if the URL is used after it has passed the aforementioned sanitization checks. This enables attackers to redirect users to external content and carry out phishing attacks. This issue affects TYPO3 CMS versions before 10.4.57, 11.0.0-11.5.50, 12.0.0-12.4.45, 13.0.0-13.4.30 and 14.0.0-14.3.2.

Affected products

• TYPO3 TYPO3 CMS: before 10.4.57 (fixed in 10.4.57); from 11.0.0, before 11.5.51 (fixed in 11.5.51); from 12.0.0, before 12.4.46 (fixed in 12.4.46); from 13.0.0, before 13.4.31 (fixed in 13.4.31); from 14.0.0, before 14.3.3 (fixed in 14.3.3)

Published 2026-06-09. Last modified 2026-07-23.