TYPO3 before 13.0.1 allows an authenticated admin user (with system maintainer privileges) to execute arbitrary shell commands (with the privileges of the web server) via a command injection vulnerability in form fields of the Install Tool. The fixed versions are 8.7.57 ELTS, 9.5.46 ELTS, 10.4.43 ELTS, 11.5.35 LTS, 12.4.11 LTS, and 13.0.1.
https://typo3.org/security/advisory/typo3-core-sa-2024-002
https://github.com/TYPO3/typo3/security/advisories/GHSA-5w2h-59j3-8x5w