Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection') vulnerability in Bob Watu Quiz allows SQL Injection. This issue affects Watu Quiz: from n/a through 3.4.3.
The Watu Quiz WordPress plugin before 3.4.1.2 does not sanitise and escape some of its settings, which could allow users such as authors (if they've been authorized by admins) to perform Stored Cross-Site Scripting attacks even when the unfiltered_html capability is disallowed.
The Watu Quiz plugin for WordPress is vulnerable to Sensitive Information Exposure in all versions up to, and including, 3.4.1 via the watu-userinfo shortcode. This makes it possible for authenticated attackers, with contributor-level access and above, to extract sensitive user meta data which can include session tokens and user emails.