CVE-2026-42280

7.1 HIGH

Auth0.js is a client-side JavaScript library for Auth0

Published: 2026-05-27 · Last updated: 2026-06-04

Severity and scoring

CVSS: 7.1 HIGH
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N
CWE: CWE-863

Affected products

Vendor	Product
auth0	auth0.js

Description

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.

Source: NVD

References

[NVD]https://nvd.nist.gov/vuln/detail/CVE-2026-42280
[Vendor advisory]https://github.com/auth0/auth0.js/security/advisories/GHSA-8qjv-jj2q-x832

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