CDS Invenio 0.92.1 and earlier allows remote authenticated users to delete email notification alerts of arbitrary users via a modified internal UID.
https://exchange.xforce.ibmcloud.com/vulnerabilities/41546
http://www.securityfocus.com/bid/28514
http://secunia.com/advisories/29521
http://cdsware.cern.ch/lists/project-cdsware-announce/archive/msg00021.shtml