Ruby on Rails Improper Limitation of a Pathname to a Restricted Directory (Path Traversal) Vulnerability - CVE-2016-0752
Directory traversal vulnerability in Action View in Ruby on Rails before 3.2.22.1 4.0.x and 4.1.x before 4.1.14.1 4.2.x before 4.2.5.1 and 5.x before 5.0.0.beta1.1 allows remote attackers to read arbitrary files by leveraging an application39s unrestricted use of the render method and providing a .. (dot dot) in a pathname.