The Simple Giveaways WordPress plugin before 2.45.1 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/7ead9fb9-d81f-47c6-a1b4-21f29183cc15