CVE-2009-3009: Rubyonrails Rails

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

Cross-site scripting (XSS) vulnerability in Ruby on Rails 2.x before 2.2.3, and 2.3.x before 2.3.4, allows remote attackers to inject arbitrary web script or HTML by placing malformed Unicode strings into a form helper.

Affected products

• Rubyonrails Rails: version 2.0.0 only; version 2.0.1 only; version 2.0.2 only; version 2.0.4 only; version 2.1.0 only; version 2.1.1 only; …

Published 2009-09-08. Last modified 2026-06-16.