- Component Type: TYPO3 CMS
- Subcomponent: Core Utilities (ext:core)
- Release Date: September 9, 2025
- Vulnerability Type: Open Redirect
- Affected Versions: 9.0.0-9.5.54, 10.0.0-10.4.53, 11.0.0-11.5.47, 12.0.0-12.4.36, 13.0.0-13.4.17
- Severity: Medium
- Suggested CVSS: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:N/SI:L/SA:N
- References: CVE-2025-59013, CWE-601
Problem Description
Applications that use TYPO3\CMS\Core\Utility\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.
Solution
Update to TYPO3 versions 9.5.55 ELTS, 10.4.54 ELTS, 11.5.48 ELTS, 12.4.37 LTS, 13.4.18 LTS that fix the problem described.
Credits
Thanks to TYPO3 core & security team member Oliver Hader for reporting this issue, and to TYPO3 core & security team member Benjamin Franzke for fixing it.
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.