PYSEC-2026-107

Vulnerability from pysec - Published: 2026-01-22 17:16 - Updated: 2026-05-21 14:54
VLAI
Details

The orjson.dumps function in orjson thru 3.11.4 does not limit recursion for deeply nested JSON documents.

Severity
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Impacted products
Name purl
orjson pkg:pypi/orjson
Aliases
To clipboard 

{
  "affected": [
    {
      "ecosystem_specific": {},
      "package": {
        "ecosystem": "PyPI",
        "name": "orjson",
        "purl": "pkg:pypi/orjson"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "3.11.5"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.0.0",
        "1.0.1",
        "1.1.0",
        "1.2.0",
        "1.2.1",
        "1.3.0",
        "1.3.1",
        "2.0.0",
        "2.0.1",
        "2.0.10",
        "2.0.11",
        "2.0.2",
        "2.0.3",
        "2.0.4",
        "2.0.5",
        "2.0.6",
        "2.0.7",
        "2.0.8",
        "2.0.9",
        "2.1.0",
        "2.1.1",
        "2.1.2",
        "2.1.3",
        "2.1.4",
        "2.2.0",
        "2.2.1",
        "2.2.2",
        "2.3.0",
        "2.4.0",
        "2.5.0",
        "2.5.1",
        "2.5.2",
        "2.6.0",
        "2.6.1",
        "2.6.2",
        "2.6.3",
        "2.6.4",
        "2.6.5",
        "2.6.6",
        "2.6.7",
        "2.6.8",
        "3.0.0",
        "3.0.1",
        "3.0.2",
        "3.1.0",
        "3.1.1",
        "3.1.2",
        "3.10.0",
        "3.10.1",
        "3.10.10",
        "3.10.11",
        "3.10.12",
        "3.10.13",
        "3.10.14",
        "3.10.15",
        "3.10.16",
        "3.10.17",
        "3.10.18",
        "3.10.2",
        "3.10.3",
        "3.10.4",
        "3.10.5",
        "3.10.6",
        "3.10.7",
        "3.10.8",
        "3.10.9",
        "3.11.0",
        "3.11.1",
        "3.11.2",
        "3.11.3",
        "3.11.4",
        "3.2.0",
        "3.2.1",
        "3.2.2",
        "3.3.0",
        "3.3.1",
        "3.4.0",
        "3.4.1",
        "3.4.2",
        "3.4.3",
        "3.4.4",
        "3.4.5",
        "3.4.6",
        "3.4.7",
        "3.4.8",
        "3.5.0",
        "3.5.1",
        "3.5.2",
        "3.5.3",
        "3.5.4",
        "3.6.0",
        "3.6.1",
        "3.6.2",
        "3.6.3",
        "3.6.4",
        "3.6.5",
        "3.6.6",
        "3.6.7",
        "3.6.8",
        "3.6.9",
        "3.7.0",
        "3.7.1",
        "3.7.10",
        "3.7.11",
        "3.7.12",
        "3.7.2",
        "3.7.3",
        "3.7.4",
        "3.7.5",
        "3.7.6",
        "3.7.7",
        "3.7.8",
        "3.7.9",
        "3.8.0",
        "3.8.1",
        "3.8.10",
        "3.8.11",
        "3.8.12",
        "3.8.13",
        "3.8.14",
        "3.8.2",
        "3.8.3",
        "3.8.4",
        "3.8.5",
        "3.8.6",
        "3.8.7",
        "3.8.8",
        "3.8.9",
        "3.9.0",
        "3.9.1",
        "3.9.10",
        "3.9.11",
        "3.9.12",
        "3.9.13",
        "3.9.14",
        "3.9.15",
        "3.9.2",
        "3.9.3",
        "3.9.4",
        "3.9.5",
        "3.9.6",
        "3.9.7",
        "3.9.8",
        "3.9.9"
      ]
    }
  ],
  "aliases": [
    "CVE-2025-67221"
  ],
  "details": "The orjson.dumps function in orjson thru 3.11.4 does not limit recursion for deeply nested JSON documents.",
  "id": "PYSEC-2026-107",
  "modified": "2026-05-21T14:54:37.289523Z",
  "published": "2026-01-22T17:16:01.433Z",
  "references": [
    {
      "type": "PACKAGE",
      "url": "https://github.com/ijl/orjson"
    },
    {
      "type": "EVIDENCE",
      "url": "https://github.com/kpatsakis/orjson_vulnerability"
    }
  ],
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}


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