The Ultimate Addons for Contact Form 7 plugin for WordPress is vulnerable to SQL Injection via the 'id' parameter in versions up to, and including, 3.1.23. This makes it possible for authenticated attackers of any authorization level to append additional SQL queries into already existing queries that can be used to extract sensitive information from the database.

The Ultimate Addons for Contact Form 7 WordPress plugin before 3.1.29 does not sanitise and escape a parameter before outputting it back in the page, leading to a Reflected Cross-Site Scripting which could be used against high privilege users such as admin.

The Ultimate Addons for Contact Form 7 WordPress plugin before 3.1.29 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 unfilteredhtml capability is disallowed (for example in multisite setup)