Mantis Bug Tracker (aka MantisBT) 1.2.12 before 1.2.15 allows remote attackers to cause a denial of service (resource consumption) via a filter using a criteria, text search, and the "any condition" match type.
https://exchange.xforce.ibmcloud.com/vulnerabilities/83347
https://bugzilla.redhat.com/show_bug.cgi?id=924340