The Quick Paypal Payments WordPress plugin before 5.7.26.4 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)
The Quick Event Manager WordPress Plugin, version < 9.7.5, is affected by a reflected cross-site scripting vulnerability in the 'category' parameter of its 'qem_ajax_calendar' action.