TorrentFlux 2.4 allows remote authenticated users to delete or modify other users' cookies via the cid parameter in an editCookies action to profile.php.
https://euvd.enisa.europa.eu/vulnerability/EUVD-2014-5917
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=759573
http://www.securitytracker.com/id/1030791