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MEDIUM · 5.7

CVE-2025-67716

The 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 a...

Vulnerability Description

The 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.

CVSS Score

5.7

MEDIUM

CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:N
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
HIGH
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
NONE

Affected Products

VendorProductVersions
Auth0Nextjs-Auth0>= 4.9.0, < 4.12.1

Related Weaknesses (CWE)

CWE-184

References

FAQ

What is CVE-2025-67716?

CVE-2025-67716 is a vulnerability with a CVSS score of 5.7 (MEDIUM). The 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 a...

How severe is CVE-2025-67716?

CVE-2025-67716 has been rated MEDIUM with a CVSS base score of 5.7/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2025-67716?

Check the references section above for vendor advisories and patch information. Affected products include: Auth0 Nextjs-Auth0.