{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "versions": [
              {
                "introduced": "5.0.0"
              },
              {
                "last_affected": "5.5.2"
              }
            ]
          },
          "events": [
            {
              "introduced": "cca430ebe55939a488ceda93a75bfe401228ecb5"
            },
            {
              "last_affected": "f1ae764973b6492e3c69109060c95240b7cc3d41"
            }
          ],
          "repo": "https://github.com/marshmallow-code/webargs",
          "type": "GIT"
        }
      ]
    }
  ],
  "details": "flaskparser.py in Webargs 5.x through 5.5.2 doesn't check that the Content-Type header is application/json when receiving JSON input. If the request body is valid JSON, it will accept it even if the content type is application/x-www-form-urlencoded. This allows for JSON POST requests to be made across domains, leading to CSRF.",
  "id": "CVE-2020-7965",
  "modified": "2026-03-13T21:58:30.506575756Z",
  "published": "2020-01-29T15:15:11.070Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://webargs.readthedocs.io/en/latest/changelog.html"
    }
  ],
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}