The DSGVO All in one for WP plugin for WordPress is vulnerable to Cross-Site Request Forgery in all versions up to, and including, 4.6. This is due to missing or incorrect nonce validation in the user_remove_form.php file. This makes it possible for unauthenticated attackers to delete admin user accounts via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.

Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Michael Leithold DSGVO All in one for WP allows Stored XSS.This issue affects DSGVO All in one for WP: from n/a through 4.5.

Cross-Site Request Forgery (CSRF) vulnerability in Michael Leithold DSGVO All in one for WP.This issue affects DSGVO All in one for WP: from n/a through 4.3.

The DSGVO All in one for WP WordPress plugin before 4.2 does not sanitise and escape some of its settings, which could allow high privilege users such as admin to perform Stored Cross-Site Scripting attacks even when the unfiltered_html capability is disallowed (for example in multisite setup)

The dsgvoaio_write_log AJAX action of the DSGVO All in one for WP WordPress plugin before 4.0 did not sanitise or escape some POST parameter submitted before outputting them in the Log page in the administrator dashboard (wp-admin/admin.php?page=dsgvoaiofree-show-log). This could allow unauthenticated attackers to gain unauthorised access by using an XSS payload to create a rogue administrator account, which will be trigged when an administrator will view the logs.