{"schemaVersion":3,"id":"CVE-2021-41098","aliases":["openSUSE-SU-2024:11577-1","GHSA-2rr5-8q37-2w7h"],"status":"published","duplicateOf":null,"title":null,"description":"Nokogiri is a Rubygem providing HTML, XML, SAX, and Reader parsers with XPath and CSS selector support. In Nokogiri v1.12.4 and earlier, on JRuby only, the SAX parser resolves external entities by default. Users of Nokogiri on JRuby who parse untrusted documents using any of these classes are affected: Nokogiri::XML::SAX::Parse, Nokogiri::HTML4::SAX::Parser or its alias Nokogiri::HTML::SAX::Parser, Nokogiri::XML::SAX::PushParser, and Nokogiri::HTML4::SAX::PushParser or its alias Nokogiri::HTML::SAX::PushParser. JRuby users should upgrade to Nokogiri v1.12.5 or later to receive a patch for this issue. There are no workarounds available for v1.12.4 or earlier. CRuby users are not affected.","dates":{"published":"2021-09-27T19:35:11.000Z","modified":"2024-08-04T02:59:31.455Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":7.5,"severity":"high","version":"3.0","versionLabel":"v3.0","source":"CVE.org","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","computed":false,"selection":"backend-summary"},"metrics":[{"version":"3.0","versionLabel":"v3.0","source":"CVE.org","score":7.5,"severity":"high","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","exploitability":null,"impact":null,"computed":false},{"version":"3.0","versionLabel":"v3.0","source":"OSV · Rubygems","score":7.5,"severity":"high","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","exploitability":10,"impact":6,"computed":true},{"version":"3.1","versionLabel":"v3.1","source":"NVD","score":7.5,"severity":"high","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","exploitability":null,"impact":null,"computed":false},{"version":"3.0","versionLabel":"v3.0","source":"NVD","score":7.5,"severity":"high","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","exploitability":null,"impact":null,"computed":false},{"version":"2.0","versionLabel":"v2.0","source":"NVD","score":5,"severity":"medium","vector":"AV:N/AC:L/Au:N/C:P/I:N/A:N","exploitability":null,"impact":null,"computed":false}]},"epss":{"probability":0.0146,"percentile":0.73164,"severity":"low","asOf":"2026-10-19T00:00:00.000Z","change":{"pp":0.01299999999999999,"baselineDate":"2026-09-19T00:00:00.000Z","baselineScore":0.01447},"history":[{"date":"2026-09-14T00:00:00.000Z","score":0.01447,"percentile":null},{"date":"2026-09-15T00:00:00.000Z","score":0.01447,"percentile":null},{"date":"2026-09-16T00:00:00.000Z","score":0.01447,"percentile":null},{"date":"2026-09-17T00:00:00.000Z","score":0.01447,"percentile":null},{"date":"2026-09-18T00:00:00.000Z","score":0.01447,"percentile":null},{"date":"2026-09-19T00:00:00.000Z","score":0.01447,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.01447,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.01447,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.01447,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.01447,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.01447,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.01447,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.01447,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.0146,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.0146,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.0146,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.0146,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.0146,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.0146,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.0146,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.0146,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.0146,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.0146,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.0146,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.0146,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.0146,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.0146,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.0146,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.0146,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.0146,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.0146,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.0146,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.0146,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.0146,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.0146,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.0146,"percentile":0.73164}],"last30":[{"date":"2026-09-19T00:00:00.000Z","score":0.01447,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.01447,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.01447,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.01447,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.01447,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.01447,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.01447,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.01447,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.0146,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.0146,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.0146,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.0146,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.0146,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.0146,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.0146,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.0146,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.0146,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.0146,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.0146,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.0146,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.0146,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.0146,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.0146,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.0146,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.0146,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.0146,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.0146,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.0146,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.0146,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.0146,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.0146,"percentile":0.73164}]},"kev":{"state":"not-listed","entries":[],"listedCount":0,"totalCatalogs":3,"catalogs":[{"source":"cisa","label":"CISA","listed":false,"entry":null},{"source":"enisa","label":"ENISA","listed":false,"entry":null},{"source":"circl","label":"CIRCL","listed":false,"entry":null}]},"ransomware":{"state":"none-recorded","sources":[]},"exploits":[],"exploitCount":0,"weaknesses":[{"id":"CWE-611","name":"Improper Restriction of XML External Entity Reference","description":"The product processes an XML document that can contain XML entities with URIs that resolve to documents outside of the intended sphere of control, causing the product to embed incorrect documents into its output.","type":"weakness","status":"Draft","abstraction":"Base","likelihoodOfExploit":null,"url":"https://cwe.mitre.org/data/definitions/611.html"}],"affected":[{"vendor":"RubyGems","product":"nokogiri","name":"nokogiri","label":"nokogiri","ecosystem":"RubyGems","cpePart":null,"purl":"pkg:gem/nokogiri","purlType":"gem","versions":[{"text":"< 1.12.5","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 1.12.5","eol":null,"hubHref":null},{"vendor":"nokogiri","product":"nokogiri","name":"nokogiri","label":"nokogiri","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"< 1.12.5","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 1.12.5","eol":null,"hubHref":"/vendor/nokogiri/nokogiri"},{"vendor":"opensuse","product":"rubygem-nokogiri&distro=openSUSE Tumbleweed","name":"rubygem-nokogiri","label":"rubygem-nokogiri&distro=openSUSE Tumbleweed","ecosystem":"openSUSE","cpePart":null,"purl":"pkg:rpm/opensuse/rubygem-nokogiri&distro=openSUSE Tumbleweed","purlType":"rpm","versions":[{"text":"< 1.12.5-1.1","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 1.12.5-1.1","eol":null,"hubHref":null},{"vendor":"sparklemotion","product":"nokogiri","name":"nokogiri","label":"nokogiri","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"< 1.12.5","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 1.12.5","eol":null,"hubHref":"/vendor/sparklemotion/nokogiri"}],"affectedCount":4,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://github.com/sparklemotion/nokogiri/security/advisories/GHSA-2rr5-8q37-2w7h","label":"github.com/sparklemotion/nokogiri/security/advisories/GHSA-2rr5-8q37-2w7h","hostname":"github.com","tags":["X Refsource CONFIRM","WEB","Third Party Advisory"]},{"url":"https://github.com/sparklemotion/nokogiri/commit/5bf729ff3cc84709ee3c3248c981584088bf9f6d","label":"github.com/sparklemotion/nokogiri/commit/5bf729ff3cc84709ee3c3248c981584088bf9f6d","hostname":"github.com","tags":["X Refsource MISC","WEB","Patch","Third Party Advisory"]},{"url":"https://www.suse.com/security/cve/CVE-2021-41098","label":"www.suse.com/security/cve/CVE-2021-41098","hostname":"www.suse.com","tags":["WEB"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-41098","label":"nvd.nist.gov/vuln/detail/CVE-2021-41098","hostname":"nvd.nist.gov","tags":["Advisory"]},{"url":"https://github.com/rubysec/ruby-advisory-db/blob/master/gems/nokogiri/CVE-2021-41098.yml","label":"github.com/rubysec/ruby-advisory-db/blob/master/gems/nokogiri/CVE-2021-41098.yml","hostname":"github.com","tags":["WEB"]},{"url":"https://github.com/sparklemotion/nokogiri","label":"github.com/sparklemotion/nokogiri","hostname":"github.com","tags":["PACKAGE"]}],"lineage":{"upstream":[],"downstream":["OPENSUSE-SU-2024:11912-1","OPENSUSE-SU-2024:13165-1","OPENSUSE-SU-2024:14174-1","OPENSUSE-SU-2025:14697-1","OPENSUSE-SU-2026:10356-1"],"duplicates":[],"related":["OPENSUSE-SU-2024:11912-1","OPENSUSE-SU-2024:13165-1","OPENSUSE-SU-2024:14174-1","OPENSUSE-SU-2025:14697-1","OPENSUSE-SU-2026:10356-1"]},"timeline":[{"kind":"published","date":"2021-09-27T19:35:11.000Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2024-08-04T02:59:31.455Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":30,"level":"medium","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-20T13:59:46.199Z","stale":false,"partial":false}}