The Duplicate Page and Post WordPress plugin before 2.8 does not sanitise and escape its settings, allowing high privilege users such as admin to perform Cross-Site Scripting attacks even when the unfilteredhtml capability is disallowed.

The Duplicate Page or Post WordPress plugin before 1.5.1 does not have any authorisation and has a flawed CSRF check in the wpdevartduplicatepostparametrssaveindb AJAX action, allowing any authenticated users, such as subscriber to call it and change the plugin's settings, or perform such attack via CSRF. Furthermore, due to the lack of escaping, this could lead to Stored Cross-Site Scripting issues