CVE-2021-24787: Client Invoicing by Sprout Invoices < 19.9.7 - Admin+ Stored Cross-Site Scripting
The Client Invoicing by Sprout Invoices WordPress plugin before 19.9.7 does not sanitise and escape some of its settings, which could allow high privilege users to perform Cross-Site Scripting attacks even when the unfilteredhtml capability is disallowed