Mantis Bug Tracker (MantisBT) is a Web-based issue tracking system that is both simple to use and highly customisable. A plugin system allows users to easily create and add new features. MantisBT is over 10 years old and is actively developed.Changes: This is a security update for the stable 1. 2.x branch. All installations that are currently running any 1.2.x version are advised to upgrade to this release. This release includes another round of XSS fixes, improved Excel export, translation updates, and bug fixes to the SOAP API, installation, plugin system, and email notifications.