{"cve":"CVE-2019-20174","nvd":{"published":"2020-02-03T18:15:12.053","modified":"2026-06-17T02:30:09.653","status":"Modified","description":"Auth0 Lock before 11.21.0 allows XSS when additionalSignUpFields is used with an untrusted placeholder.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","score":6.1},"cwes":["CWE-79"],"references":["https://auth0.com/docs/security/bulletins/cve-2019-20174","https://github.com/auth0/lock/releases/tag/v11.21.0","https://auth0.com/docs/security/bulletins/cve-2019-20174","https://github.com/auth0/lock/releases/tag/v11.21.0"],"products":["auth0:lock"],"source":"nvd","synced_at":"2026-10-19T21:01:01.339895972+00:00"},"epss":{"cve":"CVE-2019-20174","score":0.00724,"percentile":0.54068,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-w2pf-g6r8-pg22","url":"https://osv.dev/vulnerability/GHSA-w2pf-g6r8-pg22","summary":"auth0-lock vulnerable to XSS via unsanitized placeholder property","modified":"2023-11-08T04:01:30.142727Z","packages":[{"ecosystem":"npm","name":"auth0-lock","purl":"pkg:npm/auth0-lock","ranges":["<11.21.0"],"fixed":["11.21.0"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}