The social-warfare plugin before 3.5.3 for WordPress has stored XSS via the wp-admin/admin-post.php?swp_debug=load_options swp_url parameter, as exploited in the wild in March 2019. This affects Social Warfare and Social Warfare Pro.
https://www.exploit-db.com/exploits/46794/
https://wpvulndb.com/vulnerabilities/9238
https://wordpress.org/plugins/social-warfare/#developers
https://twitter.com/warfareplugins/status/1108852747099652099