The CE21 Suite plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the 'ce21_single_sign_on_save_api_settings' function in versions up to, and including, 2.2.0. This makes it possible for unauthenticated attackers to change plugin settings.

The CE21 Suite plugin for WordPress is vulnerable to sensitive information disclosure via the plugin-log.txt in versions up to, and including, 2.2.0. This makes it possible for unauthenticated attackers to log in the user associated with the JWT token.

The CE21 Suite plugin for WordPress is vulnerable to authentication bypass in versions up to, and including, 2.2.0. This is due to hardcoded encryption key in the 'ce21_authentication_phrase' function. This makes it possible for unauthenticated attackers to log in as any existing user on the site, such as an administrator, if they have access to the email.