Security advisory

{
  "id": "1b6830d26394146196134c99d585ddc3d0fb5346536c8aa9df0bcc7f8da1305e",
  "url": "https://osv.dev/vulnerability/CVE-2021-41098",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2021-41098",
    "summary": "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.",
    "evidence": "osv:CVE-2021-41098",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2021-41098",
      "aliases": [
        "CVE-2021-41098",
        "GHSA-2rr5-8q37-2w7h"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/sparklemotion/nokogiri",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "47f6a461fdc3e375b30522259e48569fb578dece"
                },
                {
                  "fixed": "5bf729ff3cc84709ee3c3248c981584088bf9f6d"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:nokogiri:nokogiri:*:*:*:*:*:ruby:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "1.12.5"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "range": [
                      {
                        "fixed": "5bf729ff3cc84709ee3c3248c981584088bf9f6d"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v1.12.4",
            "v1.12.3",
            "v1.12.2",
            "v1.12.1",
            "v1.12.0",
            "v1.12.0.rc1",
            "v1.11.3",
            "v1.11.2",
            "v1.11.1",
            "v1.11.0",
            "v1.11.0.rc4",
            "v1.11.0.rc3",
            "v1.11.0.rc2",
            "v1.11.0.rc1",
            "v1.10.3",
            "v1.10.2",
            "v1.8.5",
            "v1.10.1",
            "v1.10.0",
            "v1.10.0.rc1",
            "v1.9.1",
            "v1.9.0",
            "v1.9.0.rc1",
            "v1.8.4",
            "v1.8.3",
            "v1.8.2",
            "v1.8.1",
            "v1.8.0",
            "v1.7.0.1",
            "v1.7.0",
            "v1.6.8",
            "v1.6.8.rc3",
            "v1.6.8.rc2",
            "v1.6.8.rc1",
            "v1.6.7.rc4",
            "v1.6.6.2",
            "v1.6.7.rc3",
            "v1.6.7.rc2",
            "v1.6.7.rc1",
            "1.7.0.1-linux-binary1",
            "v1.6.6.1",
            "v1.6.6",
            "v1.6.5",
            "v1.6.4",
            "v1.6.3.1",
            "v1.6.3",
            "v1.6.3.rc3",
            "v1.6.3.rc2",
            "v1.6.3.rc1",
            "v1.6.2.1",
            "v1.6.2",
            "v1.6.2.rc3",
            "v1.6.2.rc1",
            "v1.6.2.beta.1",
            "v1.6.0",
            "v1.5.9",
            "v1.6.0.rc1",
            "v1.5.8",
            "v1.5.7",
            "v1.5.7.rc3",
            "v1.5.7.rc2",
            "v1.5.7.rc1",
            "v1.5.6",
            "v1.5.6.rc2",
            "v1.5.5.rc2",
            "v1.5.5.rc1",
            "v1.5.4.rc3",
            "v1.5.4.rc2",
            "v1.5.4.rc1",
            "v1.5.3",
            "v1.5.3.rc6",
            "v1.5.3.rc5",
            "v1.5.3.rc4",
            "v1.5.3.rc3",
            "v1.5.3.rc1",
            "v1.5.2",
            "v1.5.1",
            "v1.5.1.rc1",
            "v1.5.0",
            "v1.5.0.beta.3",
            "v1.5.0.beta.4",
            "REL_1.5.0.beta.2",
            "REL_1.5.0.beta.1",
            "REL_1.0.7",
            "REL_1.0.6",
            "REL_1.0.5",
            "REL_1.0.4",
            "REL_1.0.3",
            "REL_1.0.2",
            "REL_1.0.1",
            "REL_1.0.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-41098.json"
          }
        }
      ],
      "modified": "2026-10-20T10:53:55.979931995Z",
      "provider": "osv",
      "references": [
        "https://github.com/sparklemotion/nokogiri/security/advisories/GHSA-2rr5-8q37-2w7h",
        "https://github.com/sparklemotion/nokogiri/commit/5bf729ff3cc84709ee3c3248c981584088bf9f6d"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2021-41098",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 384770,
  "published_at": "2021-09-27T20:15:07.397+00:00"
}