CVE-2009-4214

Severity: medium (CVSS 4.3 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 3.0% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2009-12-07 · updated 2026-06-16
Weakness: CWE-79

Description

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

Ruby on Rails: 2.3.2, 2.3.3, 2.3.4, 0.9.1, 0.9.2, 0.9.3 (+38)
rubyonrails Ruby On Rails: through 2.1.2; 0.5.0, 0.5.5, 0.5.6, 0.5.7, 0.6.0, 0.6.5 (+4)

References

http://github.com/rails/rails/commit/bfe032858077bb2946abe25e95e485ba6da86bd5
http://groups.google.com/group/rubyonrails-security/browse_thread/thread/4d4f71f2aef4c0ab?pli=1
http://lists.apple.com/archives/security-announce/2010//Mar/msg00001.html
http://lists.opensuse.org/opensuse-security-announce/2010-03/msg00004.html
http://secunia.com/advisories/37446
http://secunia.com/advisories/38915
http://support.apple.com/kb/HT4077
http://weblog.rubyonrails.org/2009/11/30/ruby-on-rails-2-3-5-released
http://www.debian.org/security/2011/dsa-2260
http://www.debian.org/security/2011/dsa-2301
http://www.openwall.com/lists/oss-security/2009/11/27/2
http://www.openwall.com/lists/oss-security/2009/12/08/3

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