Cross-site request forgery (CSRF) vulnerability in the wp_ajax_update_plugin function in wp-admin/includes/ajax-actions.php in WordPress before 4.6 allows remote attackers to hijack the authentication of subscribers for /dev/random read operations by leveraging a late call to the check_ajax_referer function, a related issue to CVE-2016-6896.
https://www.exploit-db.com/exploits/40288/
https://wpvulndb.com/vulnerabilities/8606
https://sumofpwn.nl/advisory/2016/path_traversal_vulnerability_in_wordpress_core_ajax_handlers.html
https://github.com/WordPress/WordPress/commit/8c82515ab62b88fb32d01c9778f0204b296f3568
http://www.securitytracker.com/id/1036683