The Easy Digital Downloads WordPress plugin is vulnerable to Reflected Cross-Site Scripting via the $start_date and $end_date parameters found in the ~/includes/admin/payments/class-payments-table.php file which allows attackers to inject arbitrary web scripts, in versions up to and including 2.11.2.
https://www.wordfence.com/vulnerability-advisories/#CVE-2021-39354
https://github.com/BigTiger2020/word-press/blob/main/Easy%20Digital%20Downloads.md