See how mark evans compares to other vendors in security performance
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.
lib/dragonfly/imagemagickutils.rb in the fog-dragonfly gem 0.8.2 for Ruby allows remote attackers to execute arbitrary commands via unspecified vectors.