The Simple Giveaways WordPress plugin before 2.45.1 does not sanitise and escape some of its Giveaways options, 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/71f5d630-2726-48c7-b9e5-7bebc786b561