CVE-2013-6414: Rubyonrails Rails

Medium severity, CVSS 5.0. EPSS: 20.7% chance of exploitation in the next 30 days.

actionpack/lib/action_view/lookup_context.rb in Action View in Ruby on Rails 3.x before 3.2.16 and 4.x before 4.0.2 allows remote attackers to cause a denial of service (memory consumption) via a header containing an invalid MIME type that leads to excessive caching.

Affected products

• Rubyonrails Rails: up to and including 4.0.1; version 4.0.0 only; version 4.0.1 only; version 3.0.0 only; version 3.0.1 only; version 3.0.2 only; …
• Rubyonrails Ruby On Rails: up to and including 3.2.15; version 3.0.4 only; version 3.1.11 only; version 3.2.14 only; version 3.2.15 only

Published 2013-12-07. Last modified 2026-06-17.