PYSEC-2026-1812

Vulnerability from pysec - Published: 2026-07-07 11:45 - Updated: 2026-07-07 17:25
VLAI
Details

Regular expression denial of service in Pydantic < 2.4.0, < 1.10.13 allows remote attackers to cause denial of service via a crafted email string.

Severity
5.9 (Medium)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Impacted products
Name purl
pydantic pkg:pypi/pydantic
Aliases
To clipboard 

{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "pydantic",
        "purl": "pkg:pypi/pydantic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.10.13"
            },
            {
              "introduced": "2.0.0"
            },
            {
              "fixed": "2.4.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.0.1",
        "0.0.2",
        "0.0.3",
        "0.0.4",
        "0.0.5",
        "0.0.6",
        "0.0.7",
        "0.0.8",
        "0.1",
        "0.10",
        "0.11",
        "0.11.1",
        "0.11.2",
        "0.12",
        "0.12.1",
        "0.13",
        "0.13.1",
        "0.14",
        "0.15",
        "0.16",
        "0.16.1",
        "0.17",
        "0.18",
        "0.18.1",
        "0.18.2",
        "0.19",
        "0.2",
        "0.2.1",
        "0.20",
        "0.20.1",
        "0.20a1",
        "0.21",
        "0.22",
        "0.23",
        "0.24",
        "0.25",
        "0.26",
        "0.27",
        "0.27a1",
        "0.28",
        "0.29",
        "0.3",
        "0.30",
        "0.30.1",
        "0.31",
        "0.31.1",
        "0.32",
        "0.32.1",
        "0.32.2",
        "0.4",
        "0.5",
        "0.6",
        "0.6.1",
        "0.6.2",
        "0.6.3",
        "0.6.4",
        "0.7",
        "0.7.1",
        "0.8",
        "0.9",
        "0.9.1",
        "1.0",
        "1.0b1",
        "1.0b2",
        "1.1",
        "1.1.1",
        "1.10.0",
        "1.10.0a1",
        "1.10.0a2",
        "1.10.0b1",
        "1.10.1",
        "1.10.10",
        "1.10.11",
        "1.10.12",
        "1.10.2",
        "1.10.3",
        "1.10.4",
        "1.10.5",
        "1.10.6",
        "1.10.7",
        "1.10.8",
        "1.10.9",
        "1.2",
        "1.3",
        "1.4",
        "1.5",
        "1.5.1",
        "1.6",
        "1.6.1",
        "1.6.2",
        "1.7",
        "1.7.1",
        "1.7.2",
        "1.7.3",
        "1.7.4",
        "1.8",
        "1.8.1",
        "1.8.2",
        "1.9.0",
        "1.9.0a1",
        "1.9.0a2",
        "1.9.1",
        "1.9.2",
        "2.0",
        "2.0.1",
        "2.0.2",
        "2.0.3",
        "2.1.0",
        "2.1.1",
        "2.2.0",
        "2.2.1",
        "2.3.0"
      ]
    }
  ],
  "aliases": [
    "CVE-2024-3772",
    "GHSA-mr82-8j83-vxmv"
  ],
  "details": "Regular expression denial of service in Pydantic \u003c 2.4.0, \u003c 1.10.13 allows remote attackers to cause denial of service via a crafted email string.",
  "id": "PYSEC-2026-1812",
  "modified": "2026-07-07T17:25:10.342315Z",
  "published": "2026-07-07T11:45:38.517274Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-3772"
    },
    {
      "type": "WEB",
      "url": "https://github.com/pydantic/pydantic/pull/7360"
    },
    {
      "type": "WEB",
      "url": "https://github.com/pydantic/pydantic/commit/59d8f38fd6220e3917c53785dbc70317d6f8e631"
    },
    {
      "type": "WEB",
      "url": "https://github.com/pydantic/pydantic/commit/e4393ae6145c4dadff739990bb0116c6dec3441b"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/pydantic/pydantic"
    },
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/6JBZLMSH4GAZOVBMT2JUO2LXHY7M2ALI"
    },
    {
      "type": "PACKAGE",
      "url": "https://pypi.org/project/pydantic"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/advisories/GHSA-mr82-8j83-vxmv"
    }
  ],
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Pydantic regular expression denial of service"
}



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