The Bug Library WordPress plugin before 2.1.2 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)
https://wpscan.com/vulnerability/29985150-8d49-4a3f-8411-5d7263b424d8/