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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.","references":[{"reference_url":"https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-41098.json","reference_id":"","reference_type":"","scores":[{"value":"7.5","scoring_system":"cvssv3","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"}],"url":"https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-41098.json"},{"reference_url":"https://api.first.org/data/v1/epss?cve=CVE-2021-41098","reference_id":"","reference_type":"","scores":[{"value":"0.00564","scoring_system":"epss","scoring_elements":"0.68449","published_at":"2026-04-16T12:55:00Z"},{"value":"0.00564","scoring_system":"epss","scoring_elements":"0.68411","published_at":"2026-04-13T12:55:00Z"},{"value":"0.00564","scoring_system":"epss","scoring_elements":"0.68444","published_at":"2026-04-12T12:55:00Z"},{"value":"0.00564","scoring_system":"epss","scoring_elements":"0.68456","published_at":"2026-04-11T12:55:00Z"},{"value":"0.00564","scoring_system":"epss","scoring_elements":"0.6843","published_at":"2026-04-09T12:55:00Z"},{"value":"0.00564","scoring_system":"epss","scoring_elements":"0.68413","published_at":"2026-04-08T12:55:00Z"},{"value":"0.00564","scoring_system":"epss","scoring_elements":"0.68362","published_at":"2026-04-07T12:55:00Z"},{"value":"0.00565","scoring_system":"epss","scoring_elements":"0.68359","published_at":"2026-04-01T12:55:00Z"},{"value":"0.00565","scoring_system":"epss","scoring_elements":"0.68379","published_at":"2026-04-02T12:55:00Z"},{"value":"0.00565","scoring_system":"epss","scoring_elements":"0.68398","published_at":"2026-04-04T12:55:00Z"}],"url":"https://api.first.org/data/v1/epss?cve=CVE-2021-41098"},{"reference_url":"https://github.com/rubysec/ruby-advisory-db/blob/master/gems/nokogiri/CVE-2021-41098.yml","reference_id":"","reference_type":"","scores":[{"value":"7.5","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/rubysec/ruby-advisory-db/blob/master/gems/nokogiri/CVE-2021-41098.yml"},{"reference_url":"https://github.com/sparklemotion/nokogiri","reference_id":"","reference_type":"","scores":[{"value":"7.5","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/sparklemotion/nokogiri"},{"reference_url":"https://github.com/sparklemotion/nokogiri/commit/5bf729ff3cc84709ee3c3248c981584088bf9f6d","reference_id":"","reference_type":"","scores":[{"value":"7.5","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/sparklemotion/nokogiri/commit/5bf729ff3cc84709ee3c3248c981584088bf9f6d"},{"reference_url":"https://github.com/sparklemotion/nokogiri/security/advisories/GHSA-2rr5-8q37-2w7h","reference_id":"","reference_type":"","scores":[{"value":"7.5","scoring_system":"cvssv3","scoring_elements":""},{"value":"7.5","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"},{"value":"HIGH","scoring_system":"cvssv3.1_qr","scoring_elements":""},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/sparklemotion/nokogiri/security/advisories/GHSA-2rr5-8q37-2w7h"},{"reference_url":"https://bugzilla.redhat.com/show_bug.cgi?id=2008914","reference_id":"2008914","reference_type":"","scores":[],"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2008914"},{"reference_url":"https://security.archlinux.org/AVG-2424","reference_id":"AVG-2424","reference_type":"","scores":[{"value":"High","scoring_system":"archlinux","scoring_elements":""}],"url":"https://security.archlinux.org/AVG-2424"},{"reference_url":"https://nvd.nist.gov/vuln/detail/CVE-2021-41098","reference_id":"CVE-2021-41098","reference_type":"","scores":[{"value":"7.5","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-41098"},{"reference_url":"https://github.com/advisories/GHSA-2rr5-8q37-2w7h","reference_id":"GHSA-2rr5-8q37-2w7h","reference_type":"","scores":[{"value":"HIGH","scoring_system":"cvssv3.1_qr","scoring_elements":""}],"url":"https://github.com/advisories/GHSA-2rr5-8q37-2w7h"}],"fixed_packages":[],"aliases":["CVE-2021-41098","GHSA-2rr5-8q37-2w7h"],"risk_score":4.0,"exploitability":"0.5","weighted_severity":"8.0","resource_url":"http://public2.vulnerablecode.io/vulnerabilities/VCID-8geh-vfns-pfgs"}],"fixing_vulnerabilities":[],"risk_score":"4.0","resource_url":"http://public2.vulnerablecode.io/packages/pkg:alpm/archlinux/ruby-nokogiri@1.12.2-1"}