The Dragonfly gem 0.7 before 0.8.6 and 0.9.x before 0.9.13 for Ruby, when used with Ruby on Rails, allows remote attackers to execute arbitrary code via a crafted request.
https://groups.google.com/forum/?fromgroups=#%21topic/dragonfly-users/3c3WIU3VQTo
https://github.com/markevans/dragonfly/commit/a8775aacf9e5c81cf11bec34b7afa7f27ddfe277
https://exchange.xforce.ibmcloud.com/vulnerabilities/82476