{
  "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-2026-59639",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-59639",
    "idYear": 2026,
    "status": "PUBLISHED",
    "publishedAt": "2026-08-03T00:56:24.394Z",
    "updatedAt": "2026-08-03T13:24:16.359Z",
    "importedAt": "2026-10-24T01:58:20.586Z",
    "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": "CMS verifySignatures returns true for SignedData with zero signers",
      "summary": "In Bouncy Castle for Java before 1.85, CMS verifySignatures returns true for SignedData with zero signers. This issue also affects Bouncy Castle for Java LTS before 2.73.12, and Bouncy Castle for Java FIPS (BC-FJA) before bcpkix-fips 1.0.12 (1.0.X series), 2.0.12 (2.0.X series) and 2.1.12 (2.1.X series).",
      "affected": [
        {
          "vendor": "Legion of the Bouncy Castle Inc.",
          "product": "BC-JAVA",
          "packageName": "bcpkix",
          "collectionURL": "https://www.bouncycastle.org/download/bouncy-castle-java/",
          "platforms": [
            "all"
          ],
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "0",
              "status": "affected",
              "versionType": "maven",
              "lessThan": "1.85"
            }
          ]
        },
        {
          "vendor": "Legion of the Bouncy Castle Inc.",
          "product": "BC-LTS-JAVA",
          "packageName": "bcpkix-lts8on",
          "collectionURL": "https://www.bouncycastle.org/download/bouncy-castle-java-lts/",
          "platforms": [
            "all"
          ],
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "2.73.0",
              "status": "affected",
              "versionType": "maven",
              "lessThan": "2.73.12"
            }
          ]
        },
        {
          "vendor": "Legion of the Bouncy Castle Inc.",
          "product": "BC-FJA",
          "packageName": "bcpkix-fips",
          "collectionURL": "https://www.bouncycastle.org/download/bouncy-castle-java-fips/",
          "platforms": [
            "all"
          ],
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "1.0.0",
              "status": "affected",
              "versionType": "maven",
              "lessThan": "1.0.12"
            },
            {
              "version": "2.0.0",
              "status": "affected",
              "versionType": "maven",
              "lessThan": "2.0.12"
            },
            {
              "version": "2.1.0",
              "status": "affected",
              "versionType": "maven",
              "lessThan": "2.1.12"
            }
          ]
        }
      ]
    }
  }
}