JSON::SIMD before version 1.07 and earlier for Perl has an integer buffer overflow causing a segfault when parsing crafted JSON, enabling denial-of-service attacks or other unspecified impact

{
  "id": "2980bde326c73b45e361fc7c1c704f354b8246ffcc9f67750bca9daac4a00f3f",
  "url": "https://osv.dev/vulnerability/CVE-2025-40930",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "JSON::SIMD before version 1.07 and earlier for Perl has an integer buffer overflow causing a segfault when parsing crafted JSON, enabling denial-of-service attacks or other unspecified impact",
    "summary": "JSON::SIMD before version 1.07 and earlier for Perl has an integer buffer overflow causing a segfault when parsing crafted JSON, enabling denial-of-service attacks or other unspecified impact.",
    "evidence": "osv:CVE-2025-40930",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2025-40930",
      "aliases": [
        "CVE-2025-40930"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/pjuhasz/json-simd",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "9a87de7331c9fa5198cae404a83b17649cf7b918"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "fixed": "9a87de7331c9fa5198cae404a83b17649cf7b918"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  }
                ]
              }
            }
          ],
          "versions": [
            "1.06_but_really",
            "1.06",
            "1.05",
            "1.04",
            "LAST_JSON_XS_VERSION"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-40930.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:31.301152050Z",
      "provider": "osv",
      "references": [
        "https://cpan.org/modules",
        "https://metacpan.org/release/PJUHASZ/JSON-SIMD-1.06/source/SIMD.xs#L248",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/40xxx/CVE-2025-40930.json",
        "https://metacpan.org/release/PJUHASZ/JSON-SIMD-1.07/changes",
        "https://nvd.nist.gov/vuln/detail/CVE-2025-40930",
        "https://github.com/pjuhasz/JSON-SIMD/commit/9a87de7331c9fa5198cae404a83b17649cf7b918.patch",
        "https://github.com/pjuhasz/JSON-SIMD"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-122"
        ],
        "cna_assigner": "CPANSec",
        "unresolved_ranges": [
          {
            "extracted_events": [
              {
                "range": [
                  {
                    "fixed": "1.07"
                  }
                ],
                "source": "AFFECTED_FIELD",
                "strategy": "StandardRange"
              }
            ]
          },
          {
            "extracted_events": [
              {
                "range": [
                  {
                    "fixed": "1.07"
                  },
                  {
                    "last_affected": "1.07"
                  }
                ],
                "source": "DESCRIPTION"
              }
            ]
          }
        ],
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/40xxx/CVE-2025-40930.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2025-40930",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 498061,
  "published_at": "2025-09-08T15:09:01.179+00:00"
}