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brew-asciidoctor-cve-2024-43398
Vulnerability from osv_homebrew
Published
2026-08-13 16:36
Modified
2026-08-13 16:36
Summary
REXML denial of service vulnerability
Details

Impact

The REXML gem before 3.3.6 has a DoS vulnerability when it parses an XML that has many deep elements that have same local name attributes.

If you need to parse untrusted XMLs with tree parser API like REXML::Document.new, you may be impacted to this vulnerability. If you use other parser APIs such as stream parser API and SAX2 parser API, this vulnerability is not affected.

Patches

The REXML gem 3.3.6 or later include the patch to fix the vulnerability.

Workarounds

Don't parse untrusted XMLs with tree parser API.

References

  • https://www.ruby-lang.org/en/news/2024/08/22/dos-rexml-cve-2024-43398/ : An announce on www.ruby-lang.org
Severity
5.9 (Medium)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
8.2 (High)
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
References
To clipboard 

{
  "affected": [
    {
      "ecosystem_specific": {
        "fix": null,
        "range_state": "affected",
        "resource": "rexml",
        "resource_purl": "pkg:gem/rexml@3.2.6",
        "upstream_fixed_in": "3.3.6"
      },
      "package": {
        "ecosystem": "Homebrew",
        "name": "asciidoctor",
        "purl": "pkg:brew/asciidoctor"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "confidence": "high",
    "source": "matched",
    "strategy": "registry",
    "upstream_evidence": [
      {
        "ecosystem": "RubyGems",
        "key": "pkg:gem/rexml@3.2.6",
        "name": "rexml",
        "resource": "rexml",
        "strategy": "registry",
        "subject_version": "3.2.6"
      }
    ]
  },
  "details": "### Impact\n\nThe REXML gem before 3.3.6 has a DoS vulnerability when it parses an XML that has many deep elements that have same local name attributes.\n\nIf you need to parse untrusted XMLs with tree parser API like `REXML::Document.new`, you may be impacted to this vulnerability. If you use other parser APIs such as stream parser API and SAX2 parser API, this vulnerability is not affected.\n\n### Patches\n\nThe REXML gem 3.3.6 or later include the patch to fix the vulnerability.\n\n### Workarounds\n\nDon\u0027t parse untrusted XMLs with tree parser API.\n\n### References\n\n* https://www.ruby-lang.org/en/news/2024/08/22/dos-rexml-cve-2024-43398/ : An announce on www.ruby-lang.org",
  "id": "BREW-asciidoctor-CVE-2024-43398",
  "modified": "2026-08-13T16:36:07Z",
  "published": "2026-08-13T16:36:07Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/ruby/rexml/security/advisories/GHSA-vmwr-mc7x-5vc3"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-43398"
    },
    {
      "type": "WEB",
      "url": "https://github.com/ruby/rexml/commit/7cb5eaeb221c322b9912f724183294d8ce96bae3"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/ruby/rexml"
    },
    {
      "type": "WEB",
      "url": "https://github.com/ruby/rexml/releases/tag/v3.3.6"
    },
    {
      "type": "WEB",
      "url": "https://github.com/rubysec/ruby-advisory-db/blob/master/gems/rexml/CVE-2024-43398.yml"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2025/01/msg00011.html"
    },
    {
      "type": "WEB",
      "url": "https://security.netapp.com/advisory/ntap-20250103-0006"
    },
    {
      "type": "WEB",
      "url": "https://www.ruby-lang.org/en/news/2024/08/22/dos-rexml-cve-2024-43398"
    }
  ],
  "schema_version": "1.7.3",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "REXML denial of service vulnerability",
  "upstream": [
    "GHSA-vmwr-mc7x-5vc3",
    "CVE-2024-43398"
  ]
}



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