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    CVE-2011-2931

    Cross-site scripting (XSS) vulnerability in the strip_tags helper in actionpack/lib/action_controller/vendor/html-scanner/html/node.rb in Ruby on Rails before 2.3.13, 3.0.x before 3.0.10, and 3.1.x before 3.1.0.rc5 allows remote attackers to inject arbitrary web script or HTML via a tag with an invalid name.

    Published:Aug 29, 2011
    Last Modified:Apr 11, 2025
    EPS:Aug 29, 2011
    EPSS Score:0.00813
    CVSS Score:4.3

    Affected Products

    Vendor
    Rubyonrails
    Product
    Rails
    Vendor
    Rubyonrails
    Product
    Ruby On Rails

    Exploits

    No exploit reference

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    CVE-2026-33176 (CVSS 6.6) — Active Support is a toolkit of support libraries and Ruby core extensions extracted from the Rails framework. …
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    CVE-2026-33173 (CVSS 5.3) — Active Storage allows users to attach cloud and local files in Rails applications. Prior to versions 8.1.2.1, …
    CVE-2026-33170 (CVSS 5.3) — Active Support is a toolkit of support libraries and Ruby core extensions extracted from the Rails framework. …
    CVE-2026-33169 (CVSS 6.9) — Active Support is a toolkit of support libraries and Ruby core extensions extracted from the Rails framework. …
    CVE-2026-33167 (CVSS 1.3) — Action Pack is a Rubygem for building web applications on the Rails framework. In versions on the 8.1 branch p…
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    References

    http://groups.google.com/group/rubyonrails-security/msg/fd41ab62966e0fd1?dmode=source&output=gplain
    http://lists.fedoraproject.org/pipermail/package-announce/2011-September/065109.html
    http://lists.fedoraproject.org/pipermail/package-announce/2011-September/065137.html
    http://lists.fedoraproject.org/pipermail/package-announce/2011-September/065212.html
    http://secunia.com/advisories/45921
    http://weblog.rubyonrails.org/2011/8/16/ann-rails-3-1-0-rc6
    http://www.debian.org/security/2011/dsa-2301
    http://www.openwall.com/lists/oss-security/2011/08/17/1
    http://www.openwall.com/lists/oss-security/2011/08/19/11
    http://www.openwall.com/lists/oss-security/2011/08/20/1
    http://www.openwall.com/lists/oss-security/2011/08/22/13
    http://www.openwall.com/lists/oss-security/2011/08/22/14
    http://www.openwall.com/lists/oss-security/2011/08/22/5
    https://bugzilla.redhat.com/show_bug.cgi?id=731436
    https://github.com/rails/rails/commit/586a944ddd4d03e66dea1093306147594748037a
    http://groups.google.com/group/rubyonrails-security/msg/fd41ab62966e0fd1?dmode=source&output=gplain
    http://lists.fedoraproject.org/pipermail/package-announce/2011-September/065109.html
    http://lists.fedoraproject.org/pipermail/package-announce/2011-September/065137.html
    http://lists.fedoraproject.org/pipermail/package-announce/2011-September/065212.html
    http://secunia.com/advisories/45921
    http://weblog.rubyonrails.org/2011/8/16/ann-rails-3-1-0-rc6
    http://www.debian.org/security/2011/dsa-2301
    http://www.openwall.com/lists/oss-security/2011/08/17/1
    http://www.openwall.com/lists/oss-security/2011/08/19/11
    http://www.openwall.com/lists/oss-security/2011/08/20/1
    http://www.openwall.com/lists/oss-security/2011/08/22/13
    http://www.openwall.com/lists/oss-security/2011/08/22/14
    http://www.openwall.com/lists/oss-security/2011/08/22/5
    https://bugzilla.redhat.com/show_bug.cgi?id=731436
    https://github.com/rails/rails/commit/586a944ddd4d03e66dea1093306147594748037a

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High