{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "range": [
                  {
                    "introduced": "0"
                  },
                  {
                    "fixed": "1.13.2"
                  }
                ],
                "source": "AFFECTED_FIELD",
                "strategy": "StandardRange"
              }
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0ad8a403a5c2eb13aacab92fffa6abc397157d10"
            }
          ],
          "repo": "https://github.com/php/frankenphp",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-ccgp-ch9h-533f"
  ],
  "database_specific": {
    "cna_assigner": "VulnCheck",
    "cwe_ids": [
      "CWE-674"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/128xxx/CVE-2026-128020.json"
  },
  "details": "FrankenPHP before 1.13.2 contains an uncontrolled recursion vulnerability in its PHP-to-Go array converter that fails to detect circular references in PHP arrays. Passing a self-referential array to frankenphp_log() or returning one from a worker callback triggers a fatal Go stack overflow, terminating the entire server process.",
  "id": "CVE-2026-128020",
  "modified": "2026-11-14T02:30:49.653571260Z",
  "published": "2026-11-13T09:34:07.894Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/128xxx/CVE-2026-128020.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/php/frankenphp/security/advisories/GHSA-ccgp-ch9h-533f"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-128020"
    },
    {
      "type": "ADVISORY",
      "url": "https://www.vulncheck.com/advisories/frankenphp-before-1.13.2-denial-of-service-via-cyclic-array-conversion"
    }
  ],
  "schema_version": "1.9.2",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "FrankenPHP before 1.13.2 Denial of Service via Cyclic Array Conversion"
}