Information Disclosure in TYPO3 Page Tree
ProblemBackend users could see items in the backend page tree without having access if the mounts pointed to pages restricted for their user/group, or if no mounts were configured but the pages allowed access to "everybody." However, affected users could not manipulate these pages.SolutionUpdate to TYPO3 versions 10.4.46 ELTS, 11.5.40 LTS, 12.4.21 LTS, 13.3.1 that fix the problem described.CreditsThanks to Peter Schuler who reported this issue and to TYPO3 core & security team member Oliver Hader who fixed the issue.