Cross-site request forgery (CSRF) vulnerability in Redmine 0.8.5 and earlier allows remote attackers to hijack the authentication of users for requests that delete a ticket via unspecified vectors.
https://exchange.xforce.ibmcloud.com/vulnerabilities/54334
http://www.vupen.com/english/advisories/2009/3291
http://www.securityfocus.com/bid/37066
http://www.redmine.org/wiki/redmine/Changelog#v087-2009-11-15
http://secunia.com/advisories/37420
http://rubyforge.org/frs/shownotes.php?release_id=41440