GHSA-HX9Q-6W63-J58V

Vulnerability from github – Published: 2026-01-22 18:30 – Updated: 2026-06-06 14:45
VLAI
Summary
orjson does not limit recursion for deeply nested JSON documents
Details

The orjson.dumps function in orjson before 3.11.6 does not limit recursion for deeply nested JSON documents.

Severity
7.7 (High)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:P
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{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "orjson"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "3.11.6"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2025-67221"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-770"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-01-22T18:55:43Z",
    "nvd_published_at": "2026-01-22T17:16:01Z",
    "severity": "HIGH"
  },
  "details": "The orjson.dumps function in orjson before 3.11.6 does not limit recursion for deeply nested JSON documents.",
  "id": "GHSA-hx9q-6w63-j58v",
  "modified": "2026-06-06T14:45:03Z",
  "published": "2026-01-22T18:30:33Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-67221"
    },
    {
      "type": "WEB",
      "url": "https://github.com/ijl/orjson/issues/620"
    },
    {
      "type": "WEB",
      "url": "https://github.com/kpatsakis/CVE-2025-67221/issues/1"
    },
    {
      "type": "WEB",
      "url": "https://github.com/ijl/orjson/commit/62bb185b70785ded49c79c26f8c9781f1e6fe370"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/ijl/orjson"
    },
    {
      "type": "WEB",
      "url": "https://github.com/kpatsakis/orjson_vulnerability"
    },
    {
      "type": "WEB",
      "url": "https://github.com/pypa/advisory-database/tree/main/vulns/orjson/PYSEC-2026-107.yaml"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:P",
      "type": "CVSS_V4"
    }
  ],
  "summary": "orjson does not limit recursion for deeply nested JSON documents"
}



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