The Accept Donations with PayPal WordPress plugin before 1.3.2 does not escape the Amount Menu Name field of created Buttons, which could allow a high privilege users to perform Cross-Site Scripting attacks even when the unfiltered_html capability is disallowed.
https://wpscan.com/vulnerability/08f4ebf5-6bbe-4fb0-a9d2-c8a994afe39b