The template selection functionality in actionpack/lib/action_view/template/resolver.rb in Ruby on Rails 3.0.x before 3.0.10 and 3.1.x before 3.1.0.rc6 does not properly handle glob characters, which allows remote attackers to render arbitrary views via a crafted URL, related to a "filter skipping vulnerability."
https://github.com/rails/rails/commit/5f94b93279f6d0682fafb237c301302c107a9552
https://bugzilla.redhat.com/show_bug.cgi?id=731432
http://www.openwall.com/lists/oss-security/2011/08/22/5
http://www.openwall.com/lists/oss-security/2011/08/22/14
http://www.openwall.com/lists/oss-security/2011/08/22/13
http://www.openwall.com/lists/oss-security/2011/08/20/1
http://www.openwall.com/lists/oss-security/2011/08/19/11
http://www.openwall.com/lists/oss-security/2011/08/17/1
http://weblog.rubyonrails.org/2011/8/16/ann-rails-3-1-0-rc6
http://lists.fedoraproject.org/pipermail/package-announce/2011-September/065212.html
http://lists.fedoraproject.org/pipermail/package-announce/2011-September/065109.html
http://groups.google.com/group/rubyonrails-security/msg/cbbbba6e4f7eaf61?dmode=source&output=gplain