{
  "schema_version": "1.4.0",
  "id": "GHSA-7mpr-5m44-h73r",
  "modified": "2025-04-28T14:34:51Z",
  "published": "2025-04-27T00:30:34Z",
  "aliases": [
    "CVE-2025-46656"
  ],
  "summary": "markdownify allows large headline prefixes such as <h9999999>, which causes memory consumption",
  "details": "python-markdownify (aka markdownify) before 0.14.1 allows large headline prefixes such as <h9999999> in addition to <h1> through <h6>. This causes memory consumption.",
  "severity": [
    {
      "type": "CVSS_V3",
      "score": "CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L"
    }
  ],
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "markdownify"
      },
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.14.1"
            }
          ]
        }
      ]
    }
  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-46656"
    },
    {
      "type": "WEB",
      "url": "https://github.com/matthewwithanm/python-markdownify/issues/143"
    },
    {
      "type": "WEB",
      "url": "https://github.com/matthewwithanm/python-markdownify/commit/959561879693bf4a576f99c6733b50b01186aa08"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/matthewwithanm/python-markdownify"
    },
    {
      "type": "WEB",
      "url": "https://github.com/matthewwithanm/python-markdownify/compare/0.14.0...0.14.1"
    }
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-1284"
    ],
    "severity": "LOW",
    "github_reviewed": true,
    "github_reviewed_at": "2025-04-28T14:34:51Z",
    "nvd_published_at": "2025-04-26T22:15:17Z"
  }
}