The XML Sitemaps WordPress plugin before 4.1.3 does not sanitise and escape a settings before outputting it in the Debug page, which could allow high privilege users to perform Cross-Site Scripting attacks even when the unfiltered_html capability is disallowed (for example in multisite setup)
https://wpscan.com/vulnerability/820c51d6-186e-4d63-b4a7-bd0a59c02cc8