TYPO3 Allows Privilege Escalation to System Maintainer

Problem Administrator-level backend users without system maintainer privileges can escalate their privileges and gain system maintainer access. Exploiting this vulnerability requires a valid administrator account. Solution Update to TYPO3 versions 10.4.50 ELTS, 11.5.44 ELTS, 12.4.31 LTS, 13.4.12...