{"id":"CVE-2021-32641","aliases":["GHSA-jr3j-whm4-9wwm"],"url":"https://o3.security/vulnerability/CVE-2021-32641","summary":"Reflected XSS when using flashMessages or languageDictionary","details":"auth0-lock is Auth0's signin solution. Versions of nauth0-lock before and including `11.30.0` are vulnerable to reflected XSS. An attacker can execute arbitrary code when the library's `flashMessage` feature is utilized and user input or data from URL parameters is incorporated into the `flashMessage` or the library's `languageDictionary` feature is utilized and user input or data from URL parameters is incorporated into the `languageDictionary`. The vulnerability is patched in version 11.30.1.","published":"2021-06-04T21:15:07.573Z","modified":"2026-07-09T00:37:56.171496Z","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":"11.30.1"}],"fix":{"url":"https://github.com/auth0/lock/commit/d139cf01c8234b07caf265e051f39d3eab08f7ed","label":"auth0/lock@d139cf0"},"references":[{"type":"ADVISORY","url":"https://github.com/auth0/lock/releases/tag/v11.30.1"},{"type":"FIX","url":"https://github.com/auth0/lock/commit/d139cf01c8234b07caf265e051f39d3eab08f7ed"},{"type":"EVIDENCE","url":"https://github.com/auth0/lock/security/advisories/GHSA-jr3j-whm4-9wwm"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-07-09T00:37:56.171496Z"}}