Cross-site scripting (XSS) vulnerability in the media_handle_upload function in wp-admin/includes/media.php in WordPress before 4.6.1 might allow remote attackers to inject arbitrary web script or HTML by tricking an administrator into uploading an image file that has a crafted filename.
https://wpvulndb.com/vulnerabilities/8615
https://wordpress.org/news/2016/09/wordpress-4-6-1-security-and-maintenance-release/
https://github.com/WordPress/WordPress/commit/c9e60dab176635d4bfaaf431c0ea891e4726d6e0
https://codex.wordpress.org/Version_4.6.1
http://www.securityfocus.com/bid/92841
http://www.openwall.com/lists/oss-security/2016/09/08/24