The Rock Convert WordPress plugin before 2.11.0 does not sanitise and escape an URL before outputting it back in an attribute when a specific widget is present on a page, leading to a Reflected Cross-Site Scripting
The Rock Convert WordPress plugin before 2.11.0 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)