CVE-2026-42280

Auth0.js is a client-side JavaScript library for Auth0. From 8.11.0 to 9.32.0, under specific preconditions, the Auth0.js SDK may improperly return user profile information using a valid access token when a specifically crafted invalid ID token is provided. This vulnerability is fixed in 10.0.0.

Score

CVSS 3.1 7.1 High

Status

Analyzed - security-advisories@github.com

Published

2026-05-27

Last modified

2026-10-26

Weaknesses

CWE-863

Affected products

• Auth0.js (Auth0)

References

• https://github.com/auth0/auth0.js/security/advisories/GHSA-8qjv-jj2q-x832