{
  "schemaVersion": 1,
  "attribution": [
    {
      "source": "CISA Known Exploited Vulnerabilities",
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog",
      "licence": "US government work"
    },
    {
      "source": "GitHub Advisory Database",
      "url": "https://github.com/advisories",
      "licence": "CC BY 4.0"
    },
    {
      "source": "Have I Been Pwned",
      "url": "https://haveibeenpwned.com/",
      "licence": "CC BY 4.0"
    },
    {
      "source": "CVE Program (CVE records)",
      "url": "https://www.cve.org/Legal/TermsOfUse",
      "licence": "CVE Terms of Use",
      "notice": "Copyright © 1999-2026, The MITRE Corporation. CVE is a trademark and the CVE logo is a registered trademark of The MITRE Corporation.",
      "terms": "CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE™). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy."
    },
    {
      "source": "FIRST EPSS",
      "url": "https://www.first.org/epss/",
      "licence": "free to use; FIRST requests attribution"
    }
  ],
  "record": {
    "id": "CVE-2026-13204",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-13204",
    "idYear": 2026,
    "status": "PUBLISHED",
    "publishedAt": "2026-07-22T14:15:30.557Z",
    "updatedAt": "2026-07-22T18:52:12.584Z",
    "importedAt": "2026-10-24T01:57:55.771Z",
    "snapshot": {
      "id": "cve_2026-10-24_midnight_baseline",
      "at": "2026-10-24T00:00:00.000Z",
      "source": "https://github.com/CVEProject/cvelistV5/releases/tag/cve_2026-10-24_0100Z"
    },
    "facts": {
      "title": "Unexpected exit in certain situations with NSEC and NSEC3 both present",
      "summary": "If a provably insecure domain is covered by both an NSEC and NSEC3 record at the parent, and there exist an RRSIG for only one of these types, then BIND may exit unexpectedly with an assertion while validating this proof.\nThis issue affects BIND 9 versions 9.11.0 through 9.18.50, 9.20.0 through 9.20.24, 9.21.0 through 9.21.23, 9.11.3-S1 through 9.18.50-S1, and 9.20.9-S1 through 9.20.24-S1.",
      "affected": [
        {
          "vendor": "ISC",
          "product": "BIND 9",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "9.11.0",
              "status": "affected",
              "versionType": "custom",
              "lessThanOrEqual": "9.18.50"
            },
            {
              "version": "9.20.0",
              "status": "affected",
              "versionType": "custom",
              "lessThanOrEqual": "9.20.24"
            },
            {
              "version": "9.21.0",
              "status": "affected",
              "versionType": "custom",
              "lessThanOrEqual": "9.21.23"
            },
            {
              "version": "9.11.3-S1",
              "status": "affected",
              "versionType": "custom",
              "lessThanOrEqual": "9.18.50-S1"
            },
            {
              "version": "9.20.9-S1",
              "status": "affected",
              "versionType": "custom",
              "lessThanOrEqual": "9.20.24-S1"
            }
          ]
        }
      ]
    }
  }
}