TYPO3 Broken Access Control in Localization Handling
Date: 2024-06
Affected: composer/typo3/cms
Attack vector: auth-bypass
Category: vulnerability-disclosure
Severity: Medium
CWE: CWE-269
CWE-285
CVSS: 6.5 (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N)

It has been discovered that backend users having limited access to specific languages are capable of modifying and creating pages in the default language which actually should be disallowed. A valid backend user account is needed in order to exploit this vulnerability.


Mitigations:

Architectural layers (MAESTRO):