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.
Improper Input Validation The product receives input or data, but it does
not validate or incorrectly validates that the input has the
properties that are required to process the data safely and
correctly.