{
  "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-2026-91768",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-91768",
    "idYear": 2026,
    "status": "PUBLISHED",
    "publishedAt": "2026-09-25T21:07:30.950Z",
    "updatedAt": "2026-09-28T13:31:31.382Z",
    "importedAt": "2026-10-24T01:58:35.090Z",
    "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": "IPv6 ACL bypass in FastCGI listen.allowed_clients due to partial address comparison (memcmp 12 bytes)",
      "summary": "The IPv6 branch of the FastCGI client access check compares only the first 12 bytes of a 16-byte IPv6 address, so listen.allowed_clients matches on a /96 prefix instead of the exact address. An attacker who can source an address sharing the first 96 bits with an allowed one passes the check and reaches the FastCGI endpoint.",
      "affected": [
        {
          "vendor": "PHP Group",
          "product": "PHP",
          "packageName": "PHP-FPM",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "8.2.*",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "8.2.34"
            },
            {
              "version": "8.3.*",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "8.3.35"
            },
            {
              "version": "8.4.*",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "8.4.26"
            },
            {
              "version": "8.5.*",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "8.5.11"
            }
          ]
        }
      ]
    }
  }
}