ntopng (aka ntop) before 2.2 allows remote authenticated users to change the login context and gain privileges via the user cookie and username parameter to admin/password_reset.lua.
https://www.exploit-db.com/exploits/38836/
https://euvd.enisa.europa.eu/vulnerability/EUVD-2015-8252
http://seclists.org/fulldisclosure/2015/Dec/10
http://packetstormsecurity.com/files/134593/ntop-ng-2.0.15102-Privilege-Escalation.html