SQL injection vulnerability in activerecord/lib/active_record/connection_adapters/postgresql/cast.rb in Active Record in Ruby on Rails 4.0.x before 4.0.3, and 4.1.0.beta1, when PostgreSQL is used, allows remote attackers to execute "add data" SQL commands via vectors involving \ (backslash) characters that are not properly handled in operations on array columns.

References

• https://nvd.nist.gov/vuln/detail/CVE-2014-0080
• GHSA-hqf9-rc9j-5fmj
• http://openwall.com/lists/oss-security/2014/02/18/9
• https://github.com/rubysec/ruby-advisory-db/blob/master/gems/activerecord/CVE-2014-0080.yml
• https://web.archive.org/web/20210301004521/https://groups.google.com/forum/message/raw?msg=rubyonrails-security/Wu96YkTUR6s/pPLBMZrlwvYJ