CVE-2026-42280CWE-863

Improper Permission Checking in Auth.js SDK

High · published May 27, 2026

CVSS v3.1
7.1
EPSS
0%
Percentile
20.4
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
7.1 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N
CVSS v4.0
Not supplied
EPSS
0.00290 · 20.4th percentile
Weakness
CWE-863 · Incorrect Authorization
Published
2026-05-27T14:39Z
EPSS history
Timeline
  • 27 MAY 14:39Z
    Improper Permission Checking in Auth.js SDK
    cvelistv5