In post-new.php in the Photocrati NextGEN Gallery plugin 2.1.10 for WordPress, unrestricted file upload is available via the name parameter, if a file extension is changed from .jpg to .php.
www.openwall.com/lists/oss-security/2015/10/27/6
cybersecurityworks.com/zerodays/cve-2015-9228-crony.html
github.com/cybersecurityworks/Disclosed/issues/6
packetstormsecurity.com/files/135061/WordPress-NextGEN-Gallery-2.1.10-Shell-Upload.html
wordpress.org/plugins/nextgen-gallery/#developers
wpvulndb.com/vulnerabilities/9758