CVE-2017-14506
geminabox (aka Gem in a Box) before 0.13.6 has XSS, as demonstrated by uploading a gem file that has a crafted gem.homepage value in its .gemspec file.
Date published : 2017-09-25
http://baraktawily.blogspot.co.il/2017/09/gem-in-box-xss-vulenrability-cve-2017.html
https://github.com/geminabox/geminabox/blob/master/CHANGELOG.md