BaseFortify

Publication date: 2025-12-10

Last updated on: 2026-03-06

Assigner: GitHub, Inc.

Description

The Auth0 Next.js SDK is a library for implementing user authentication in Next.js applications. When using versions 4.11.0 through 4.11.2 and 4.12.0, simultaneous requests on the same client may result in improper lookups in the TokenRequestCache for the request results. This issue is fixed in versions 4.11.2 and 4.12.1.

CVSS Scores

EPSS Scores

Probability:
Percentile:

Meta Information

Published

2025-12-10

Last Modified

2026-03-06

Generated

2026-07-06

AI Q&A

2025-12-11

EPSS Evaluated

2026-07-05

NVD

CVE-2025-67490

Affected Vendors & Products

Vendor	Product	Version / Range
auth0	nextjs-auth0	4.11.0
auth0	nextjs-auth0	4.12.0
auth0	nextjs-auth0	4.11.1

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-863	The product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check.

Attack-Flow Graph

Executive Summary

This vulnerability occurs in the Auth0 Next.js SDK versions 4.11.0 through 4.11.2 and 4.12.0, where simultaneous requests on the same client may cause improper lookups in the TokenRequestCache for the request results. This means that when multiple requests happen at the same time, the SDK might return incorrect token data due to cache mishandling.

Impact Analysis

The impact of this vulnerability is that it can lead to incorrect token data being returned during simultaneous requests, potentially causing authentication errors or unauthorized access scenarios. According to the CVSS score, it has a high impact on confidentiality and a low impact on integrity, with no impact on availability.

Mitigation Strategies

Upgrade the Auth0 Next.js SDK to version 4.11.2 or later, or 4.12.1 or later, as these versions contain the fix for the improper TokenRequestCache lookups issue.

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