{
  "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-2026-105818",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-105818",
    "idYear": 2026,
    "status": "PUBLISHED",
    "publishedAt": "2026-10-07T21:21:05.675Z",
    "updatedAt": "2026-10-08T17:07:02.834Z",
    "importedAt": "2026-10-24T01:57:50.502Z",
    "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": "Vault PKI ACME Issues Certificate With Unvalidated SANs",
      "summary": "Vault's PKI secrets engine ACME server did not restrict certificate identities that ACME challenges do not validate when issuing certificates under the default directory policy. This may allow an ACME client to obtain a certificate containing unverified identity claims, potentially enabling impersonation toward systems that trust certificates issued by the affected Vault PKI mount. This vulnerability (CVE-2026-105818) is fixed in Vault Community Edition 2.1.2, and Vault Enterprise 2.1.2, 1.21.12, 1.20.17, and 1.19.23.",
      "affected": [
        {
          "vendor": "HashiCorp",
          "product": "Vault",
          "platforms": [
            "64 bit",
            "32 bit",
            "x86",
            "ARM",
            "MacOS",
            "Windows",
            "Linux"
          ],
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "1.14.0",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "2.1.2"
            }
          ]
        },
        {
          "vendor": "HashiCorp",
          "product": "Vault Enterprise",
          "platforms": [
            "64 bit",
            "32 bit",
            "x86",
            "ARM",
            "MacOS",
            "Windows",
            "Linux"
          ],
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "1.14.0",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "2.1.2",
              "changes": [
                {
                  "at": "1.21.12",
                  "status": "unaffected"
                },
                {
                  "at": "1.20.17",
                  "status": "unaffected"
                },
                {
                  "at": "1.19.23",
                  "status": "unaffected"
                }
              ]
            }
          ]
        }
      ]
    }
  }
}