Exposure of Sensitive Information to an Unauthorized Actor
TYPO3 before 4.5.4 allows Information Disclosure in the backend.
CWE-200 - Information Exposure
An information exposure vulnerability is categorized as an information flow (IF) weakness, which can potentially allow unauthorized access to otherwise classified information in the application, such as confidential personal information (demographics, financials, health records, etc.), business secrets, and the application's internal environment.