CVE-2026-42280
Improper Permission Checking in Auth.js SDK
- State
- Published
- Severity
- 7.1 High
- Published
- May 27, 2026
- Updated
- May 28, 2026
- Reserved
- Apr 26, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 7.1 High | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N | GitHub_M |
Weaknesses
- CWE-863 Incorrect Authorization
Affected Products
| Product | Versions |
|---|---|
auth0.jsauth0 |
|
References
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