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.

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact High

Integrity Impact Low

Availability Impact None

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
auth0 auth0.js affected
Version Status Constraints
>= 8.11.0 , <= 9.32.0 affected —

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Project Subscriptions

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Advisories
Source ID Title
Github GHSA Github GHSA GHSA-8qjv-jj2q-x832 Auth.js SDK has Improper Permission Checking
Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://github.com/auth0/auth0.js/security/advisories/GHSA-8qjv-jj2q-x832 cve-icon cve-icon
History

Wed, 27 May 2026 15:15:00 +0000

Type Values Removed Values Added
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.
Title Improper Permission Checking in Auth.js SDK
Weaknesses CWE-863
References
Metrics cvssV3_1

{'score': 7.1, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-05-27T14:39:15.789Z

Reserved: 2026-04-26T11:53:27.717Z

Link: CVE-2026-42280

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-05-27T15:16:27.753

Modified: 2026-05-27T15:16:27.753

Link: CVE-2026-42280

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-05-27T19:45:40Z

Weaknesses