WordPress Social Warfare plugin before 3.5.3 contains a cross-site scripting vulnerability via the wp-admin/admin-post.php?swp_debug=load_options swp_url parameter, affecting Social Warfare and Social Warfare Pro.
View the template here CVE-2019-9978.yaml
References:
https://www.wordfence.com/blog/2019/03/unpatched-zero-day-vulnerability-in-social-warfare-plugin-exploited-in-the-wild/