Package Instance

Denial of Service in TYPO3 Bookmark Toolbar
### Problem
Due to insufficient input validation, manipulated data saved in the bookmark toolbar of the backend user interface causes a general error state, blocking further access to the interface. Exploiting this vulnerability requires an administrator-level backend user account.

### 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 Hendrik Eichner who reported this issue and to TYPO3 core & security team members Oliver Hader and Benjamin Franzke who fixed the issue.

### References
* [TYPO3-CORE-SA-2024-011](https://typo3.org/security/advisory/typo3-core-sa-2024-001)

TYPO3 CMS Allows Broken Access Control in Edit Document Controller
### Problem
By exploiting the `defVals` parameter, attackers could bypass field‑level access checks during record creation in the TYPO3 backend. This gave them the ability to insert arbitrary data into prohibited exclude fields of a database table for which the user already has write permission for a reduced set of fields.

### Solution
Update to TYPO3 versions 10.4.55 ELTS, 11.5.49 ELTS, 12.4.41 LTS, 13.4.23 LTS, 14.0.2 that fix the problem described.

### Credits
Thanks to Daniel Windloff for reporting this issue, and to TYPO3 core & security team member Benjamin Franzke for fixing it.

### References
* [TYPO3-CORE-SA-2026-001](https://typo3.org/security/advisory/typo3-core-sa-2026-001)

Information Disclosure in TYPO3 Page Tree
### 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.

Cross-site Scripting
Database fields used as `_descriptionColumn_` are vulnerable to cross-site scripting when their content gets previewed. A valid backend user account is needed to exploit this vulnerability.

Cross-site Scripting
Content elements of type `_menu_` are vulnerable to cross-site scripting when their referenced items get previewed in the page module. A valid backend user account is needed to exploit this vulnerability.