GHSA-3p42-w5ch-gg42
TYPO3 CMS has an Open Redirect Vulnerability via Core Utilities
Quick fix
GHSA-3p42-w5ch-gg42 — typo3/cms-core: upgrade to the fixed version with the command below.
composer require typo3/cms-core:^10.4.57Details
### Problem 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.
### Solution Update to TYPO3 versions 10.4.57 ELTS, 11.5.51 ELTS, 12.4.46 ELTS, 13.4.31 LTS, 14.3.3 LTS that fix the problem described.
### Credits TYPO3 CMS thanks Alexandre Romao for reporting this issue, and TYPO3 core & security team member Benjamin Franzke for fixing it.
### Resources * [TYPO3-CORE-SA-2026-009](https://typo3.org/security/advisory/typo3-core-sa-2026-009)
Are you affected?
Enter the version of the package you're using.
Affected packages
0Fixed in: 10.4.57composer require typo3/cms-core:^10.4.5711.0.0Fixed in: 11.5.51composer require typo3/cms-core:^11.5.5112.0.0Fixed in: 12.4.46composer require typo3/cms-core:^12.4.4613.0.0Fixed in: 13.4.31composer require typo3/cms-core:^13.4.3114.0.0Fixed in: 14.3.3composer require typo3/cms-core:^14.3.3References
- https://github.com/TYPO3/typo3/security/advisories/GHSA-3p42-w5ch-gg42[WEB]
- https://nvd.nist.gov/vuln/detail/CVE-2026-47347[ADVISORY]
- https://github.com/TYPO3/typo3/commit/22c2dd5398ebc4cb7aa4aa37e02cb39181dee0cd[WEB]
- https://github.com/TYPO3/typo3/commit/3ffc0835012c6199db0e1dc4b56a77147d8600e0[WEB]
- https://github.com/FriendsOfPHP/security-advisories/blob/master/typo3/cms-core/CVE-2026-47347.yaml[WEB]
- https://github.com/TYPO3/typo3[PACKAGE]
- https://typo3.org/security/advisory/typo3-core-sa-2026-009[WEB]