TYPO3 vulnerabilities

In versions running on TYPO3 10 and 11, the configured OpenAI API key is embedded in every backend page so that the editor plugin can contact the OpenAI service directly from the browser. Any authenticated backend user can read the key and use it at the expense of the site operator. This only applies if an API key has been configured.

The additional_tables configuration of the page and tt_content indexers accepts arbitrary table and field names. A backend user with permission to edit indexer configurations can copy sensitive data from internal TYPO3 tables into the search index.

The OOXML parsing of the file indexer does not disable external entity resolution. A crafted xlsx or pptx document placed in an indexed directory can cause local files to be read or outbound HTTP requests to be performed, with the retrieved content being written to the search index.

TYPO3 is a PHP-based content management system that had a vulnerability in versions from 9.4.0 to 9.5.42 ELTS, 10.4.39 ELTS, 11.5.30, and 12.4.4, allowing out-of-scope access to content in multi-site scenarios. This enabled visitors to access internal site content by manipulating HTTP query parameters in the URL.