The Poll Maker WordPress plugin is vulnerable to Reflected Cross-Site Scripting via the mcount parameter found in the ~/admin/partials/settings/poll-maker-settings.php file which allows attackers to inject arbitrary web scripts, in versions up to and including 3.2.8.
https://example.com/wp-admin/admin.php?page=poll-maker-ays-settings&del_stat=1&mcount=<script>alert(/test/)</script>