WordPress Essential Real Estate plugin before 3.9.6 contains an authenticated cross-site scripting vulnerability. The plugin does not sanitize and escape some parameters, which can allow someone with a role as low as admin to inject arbitrary script in the browser of an unsuspecting user in the context of the affected site. This can allow theft of cookie-based authentication credentials and launch of other attacks.
GET /wp-admin/admin-ajax.php?action=ere_property_gallery_fillter_ajax&columns_gap=%22%3E%3Cscript%3Ealert(document.domain);%3C/script%3E%3C!-- HTTP/1.1