{"id":"CVE-2019-20174","aliases":["GHSA-w2pf-g6r8-pg22"],"url":"https://o3.security/vulnerability/CVE-2019-20174","summary":"auth0-lock vulnerable to XSS via unsanitized placeholder property","details":"Auth0 Lock before 11.21.0 allows XSS when additionalSignUpFields is used with an untrusted placeholder.","published":"2020-02-03T18:15:12.053Z","modified":"2026-07-08T19:03:09.831305Z","cvss":{"score":6.1,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N"},"epss":null,"cisaKev":null,"exploitsKnown":1,"affectedPackages":[{"ecosystem":"npm","name":"auth0-lock","fixedVersion":"11.21.0"}],"fix":null,"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"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-07-08T19:03:09.831305Z"}}