CVE-2022-32209: Rails Cross-Site Scripting Vulnerability

{
  "schema_version" : "1.4.0",
  "id" : "GHSA-pg8v-g4xq-hww9",
  "modified" : "2025-11-04T16:39:03Z",
  "published" : "2022-06-25T00:00:54Z",
  "aliases" : [ "CVE-2022-32209" ],
  "summary" : "Rails::Html::Sanitizer vulnerable to Cross-site Scripting",
  "details" : "Versions of Rails::Html::Sanitizer prior to version 1.4.3 are vulnerable to XSS with certain configurations of Rails::Html::Sanitizer which  allows an attacker to inject content when the application developer has overridden the sanitizer's allowed tags to allow both `select` and `style` elements. Code is only impacted if allowed tags are being overridden. \n\nThis may be done via application configuration: ```ruby# In config/application.rbconfig.action_view.sanitized_allowed_tags = [\"select\", \"style\"]```\n\nsee https://guides.rubyonrails.org/configuring.html#configuring-action-view\n\nOr it may be done with a `:tags` option to the Action View helper `sanitize`: ```<%= sanitize @comment.body, tags: [\"select\", \"style\"] %>``` \n\nsee https://api.rubyonrails.org/classes/ActionView/Helpers/SanitizeHelper.html#method-i-sanitize \n\nIt may also be done with Rails::Html::SafeListSanitizer directly: \n```ruby# class-level optionRails::Html::SafeListSanitizer.allowed_tags = [\"select\", \"style\"]```  or with\n```ruby# instance-level optionRails::Html::SafeListSanitizer.new.sanitize(@article.body, tags: [\"select\", \"style\"])```\n\nAll users overriding the allowed tags by any of the above mechanisms to include both \"select\" and \"style\" are recommended to upgrade immediately. A workaround for this issue can be applied by removing either `select` or `style` from the overridden allowed tags.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "RubyGems",
      "name" : "rails-html-sanitizer"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "1.4.3"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2022-32209"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/rails/rails-html-sanitizer/commit/45a5c10fed3d9aa141594c80afa06d748fa0967d"
  }, {
    "type" : "WEB",
    "url" : "https://hackerone.com/reports/1530898"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/rails/rails-html-sanitizer"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/rubysec/ruby-advisory-db/blob/master/gems/rails-html-sanitizer/CVE-2022-32209.yml"
  }, {
    "type" : "WEB",
    "url" : "https://groups.google.com/g/rubyonrails-security/c/ce9PhUANQ6s"
  }, {
    "type" : "WEB",
    "url" : "https://lists.debian.org/debian-lts-announce/2022/12/msg00012.html"
  }, {
    "type" : "WEB",
    "url" : "https://lists.debian.org/debian-lts-announce/2024/09/msg00045.html"
  }, {
    "type" : "WEB",
    "url" : "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/AGRLWBEB3S5AU3D4TTROIS7O6QPHDTRH"
  }, {
    "type" : "WEB",
    "url" : "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NHDACMCLWE32BZZTSNWQPIFUAD5I6Q47"
  }, {
    "type" : "WEB",
    "url" : "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/AGRLWBEB3S5AU3D4TTROIS7O6QPHDTRH"
  }, {
    "type" : "WEB",
    "url" : "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/NHDACMCLWE32BZZTSNWQPIFUAD5I6Q47"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-79" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2022-07-05T18:10:35Z",
    "nvd_published_at" : "2022-06-24T15:15:00Z"
  }
}