GHSA-rf5m-h8q9-9w6q Information Disclosure in TYPO3 Page Tree

• Packagist typo3/cms-backend: >= 13.0.0, < 13.3.1 → fixed in 13.3.1 • Packagist typo3/cms-backend: >= 12.0.0, < 12.4.21 → fixed in 12.4.21 • Packagist typo3/cms-backend: >= 11.0.0, < 11.5.40 → fixed in 11.5.40 • Packagist typo3/cms-backend: >= 10.0.0, < 10.4.46 → fixed in 10.4.46

Problem Backend 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. Solution Update to TYPO3 versions 10.4.46 ELTS, 11.5.40 LTS, 12.4.21 LTS, 13.3.1 that fix the problem described. Credits Thanks to Peter Schuler who reported this issue and to TYPO3 core & security team member Oliver Hader who fixed the issue.