{"id":"UBUNTU-CVE-2022-23519","details":"rails-html-sanitizer is responsible for sanitizing HTML fragments in Rails applications. Prior to version 1.4.4, a possible XSS vulnerability with certain configurations of Rails::Html::Sanitizer may allow an attacker to inject content if the application developer has overridden the sanitizer's allowed tags in either of the following ways: allow both \"math\" and \"style\" elements,  or allow both \"svg\" and \"style\" elements. Code is only impacted if allowed tags are being overridden. . This issue is fixed in version 1.4.4. All users overriding the allowed tags to include \"math\" or \"svg\" and \"style\" should either upgrade or use the following workaround immediately: Remove \"style\" from the overridden allowed tags, or remove \"math\" and \"svg\" from the overridden allowed tags.","modified":"2026-05-20T16:06:41.529215252Z","published":"2022-12-14T17:15:00Z","upstream":["CVE-2022-23519"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2022-23519"},{"type":"REPORT","url":"https://github.com/rails/rails-html-sanitizer/security/advisories/GHSA-9h9g-93gc-623h"},{"type":"REPORT","url":"https://hackerone.com/reports/1656627"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2022-23519"}],"affected":[{"package":{"name":"ruby-rails-html-sanitizer","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/ruby-rails-html-sanitizer?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.0.2-1","1.0.3-1","1.0.3-2"],"ecosystem_specific":{"binaries":[{"binary_name":"ruby-rails-html-sanitizer","binary_version":"1.0.3-2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2022/UBUNTU-CVE-2022-23519.json"}},{"package":{"name":"ruby-rails-html-sanitizer","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/ruby-rails-html-sanitizer?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.0.3-2","1.0.4-1"],"ecosystem_specific":{"binaries":[{"binary_name":"ruby-rails-html-sanitizer","binary_version":"1.0.4-1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2022/UBUNTU-CVE-2022-23519.json"}},{"package":{"name":"ruby-rails-html-sanitizer","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/ruby-rails-html-sanitizer?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.0.4-1","1.3.0-1"],"ecosystem_specific":{"binaries":[{"binary_name":"ruby-rails-html-sanitizer","binary_version":"1.3.0-1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2022/UBUNTU-CVE-2022-23519.json"}},{"package":{"name":"ruby-rails-html-sanitizer","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/ruby-rails-html-sanitizer?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.3.0-2","1.4.2-1","1.4.2-2"],"ecosystem_specific":{"binaries":[{"binary_name":"ruby-rails-html-sanitizer","binary_version":"1.4.2-2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2022/UBUNTU-CVE-2022-23519.json"}},{"package":{"name":"ruby-rails-html-sanitizer","ecosystem":"Ubuntu:24.04:LTS","purl":"pkg:deb/ubuntu/ruby-rails-html-sanitizer?arch=source&distro=noble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.4.4-1"],"ecosystem_specific":{"binaries":[{"binary_name":"ruby-rails-html-sanitizer","binary_version":"1.4.4-1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2022/UBUNTU-CVE-2022-23519.json"}},{"package":{"name":"ruby-rails-html-sanitizer","ecosystem":"Ubuntu:25.10","purl":"pkg:deb/ubuntu/ruby-rails-html-sanitizer?arch=source&distro=questing"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.4.4-1","1.6.2-1"],"ecosystem_specific":{"binaries":[{"binary_name":"ruby-rails-html-sanitizer","binary_version":"1.6.2-1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2022/UBUNTU-CVE-2022-23519.json"}},{"package":{"name":"ruby-rails-html-sanitizer","ecosystem":"Ubuntu:26.04:LTS","purl":"pkg:deb/ubuntu/ruby-rails-html-sanitizer?arch=source&distro=resolute"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.6.2-1"],"ecosystem_specific":{"binaries":[{"binary_name":"ruby-rails-html-sanitizer","binary_version":"1.6.2-1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2022/UBUNTU-CVE-2022-23519.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N"},{"type":"Ubuntu","score":"medium"}]}