JIRA Enterprise Edition before 3.12.1 allows remote attackers to delete another user's shared filter via a modified filter ID.
https://euvd.enisa.europa.eu/vulnerability/EUVD-2007-6583
http://www.securityfocus.com/bid/27095
http://secunia.com/advisories/27954
http://confluence.atlassian.com/display/JIRA/JIRA+Security+Advisory+2007-12-24