CVE-2009-4214: Rubyonrails Rails

Medium severity, CVSS 4.3. EPSS: 3% chance of exploitation in the next 30 days.

Cross-site scripting (XSS) vulnerability in the strip_tags function in Ruby on Rails before 2.2.s, and 2.3.x before 2.3.5, allows remote attackers to inject arbitrary web script or HTML via vectors involving non-printing ASCII characters, related to HTML::Tokenizer and actionpack/lib/action_controller/vendor/html-scanner/html/node.rb.

Affected products

• Rubyonrails Rails: version 2.3.2 only; version 2.3.3 only; version 2.3.4 only; version 0.9.1 only; version 0.9.2 only; version 0.9.3 only; …
• Rubyonrails Ruby On Rails: up to and including 2.1.2; version 0.5.0 only; version 0.5.5 only; version 0.5.6 only; version 0.5.7 only; version 0.6.0 only; …

Published 2009-12-07. Last modified 2026-06-16.