GHSA-68JX-F42C-7599 TYPO3 CMS - Broken Access Control in Backend and Install Tool

Problem The referrer enforcement introduced with TYPO3-CORE-SA-2020-006 CVE-2020-11069 became ineffective in TYPO3 v13.0, where TYPO3 CMS started serving the backend and Admin Tool applications from the site's main entry script instead of the dedicated typo3/ directory. Whether a request originat...