The Evaluate WordPress plugin through 1.0 does not sanitize and escapes 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).
https://wpscan.com/vulnerability/8e88a5b9-6f1d-40de-99fc-8e1e66646c2b