{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "versions": [
              {
                "introduced": "0"
              },
              {
                "fixed": "11.21.0"
              }
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "ec6fdab293c972f0159c6d333f67df949ea1350d"
            }
          ],
          "repo": "https://github.com/auth0/lock",
          "type": "GIT"
        }
      ]
    }
  ],
  "details": "Auth0 Lock before 11.21.0 allows XSS when additionalSignUpFields is used with an untrusted placeholder.",
  "id": "CVE-2019-20174",
  "modified": "2026-03-13T21:55:36.520224794Z",
  "published": "2020-02-03T18:15:12.053Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/auth0/lock/releases/tag/v11.21.0"
    },
    {
      "type": "EVIDENCE",
      "url": "https://auth0.com/docs/security/bulletins/cve-2019-20174"
    }
  ],
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N",
      "type": "CVSS_V3"
    }
  ]
}