Auth0 Next.js SDK has Improper Validation of Query Parameters

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2025-67716
StatePUBLISHED
AssignerGitHub_M
Source PriorityCVE Program / NVD first with legacy fallback
Published2025-12-11 01:16:00 UTC
Updated2026-10-14 20:10:00 UTC
DescriptionThe Auth0 Next.js SDK is a library for implementing user authentication in Next.js applications. Versions 4.9.0 through 4.12.1 contain an input-validation flaw in the returnTo parameter, which could allow attackers to inject unintended OAuth query parameters into the Auth0 authorization request. Successful exploitation may result in tokens being issued with unintended parameters. This issue is fixed in version 4.13.0.

Risk And Classification

Primary CVSS: v3.1 5.7 MEDIUM from [email protected]

CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:N

Problem Types: CWE-184 | CWE-184 CWE-184: Incomplete List of Disallowed Inputs

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary5.7MEDIUMCVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:N
3.1CNADECLARED5.7MEDIUMCVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:N

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
High
Privileges Required
High
User Interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
None

CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:N

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Auth0 Nextjs-auth0 All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Auth0 Nextjs-auth0 affected >= 4.9.0, < 4.13.0 Not specified

References

ReferenceSourceLinkTags
github.com/auth0/nextjs-auth0/commit/35eb321de3345ccf23e8c0d6f66c9f2f2f5... [email protected] github.com Patch
github.com/auth0/nextjs-auth0/security/advisories/GHSA-mr6f-h57v-rpj5 [email protected] github.com Vendor Advisory
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