The routes that provide consent history and statistics data did not check whether the backend user had access to the module or to the requested page. Any authenticated backend user, regardless of permissions, could therefore retrieve consent data of any site in the installation.

The JSON import of the cookie consent configuration did not respect the backend user's permissions. Non-admin backend users with access to the module could import a configuration that adds arbitrary scripts to the frontend of the website.

The backend module for reviewing the consent history accepted sorting, grouping and index options from the request and used them in a database query without validation. Only the filter conditions of that query were bound as parameters. A backend user with access to the history or statistics functions could use this to read arbitrary data from the database, including password hashes of backend and frontend users.