Description
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.
References (3)
Core 3
Core References
Exploit, Third Party Advisory x_refsource_confirm
https://github.com/auth0/lock/security/advisories/GHSA-jr3j-whm4-9wwm
Patch, Third Party Advisory x_refsource_misc
https://github.com/auth0/lock/commit/d139cf01c8234b07caf265e051f39d3eab08f7ed
Release Notes, Third Party Advisory x_refsource_misc
https://github.com/auth0/lock/releases/tag/v11.30.1
Scores
CVSS v3
8.1
EPSS
0.0079
EPSS Percentile
74.0%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Details
CWE
CWE-79
Status
published
Products (2)
auth0/lock
< 11.30.1
npm/auth0-lock
0 - 11.30.1npm
Published
Jun 04, 2021
Tracked Since
Feb 18, 2026