MantisBT 1.2.12 before 1.2.15 allows authenticated users to by the workflow restriction and close issues.
https://security-tracker.debian.org/tracker/CVE-2013-1930
https://mantisbt.org/bugs/view.php?id=15453
https://exchange.xforce.ibmcloud.com/vulnerabilities/83796
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2013-1930
http://www.securityfocus.com/bid/58890
http://www.openwall.com/lists/oss-security/2013/04/06/4
http://lists.fedoraproject.org/pipermail/package-announce/2013-April/103459.html
http://lists.fedoraproject.org/pipermail/package-announce/2013-April/103438.html