Pagure is a git-centered forge, python based using pygit2.
With pagure you can host your project with its documentation, let your users report issues or request enhancements using the ticketing system and build your community of contributors by allowing them to fork your projects and contribute to it via the now-popular pull-request mechanism.
See it at work: https://pagure.io
Playground version: https://stg.pagure.io
There are no reported vulnerabilities