CVE-2025-67716

Published: Dec 11, 2025Modified: Jun 17, 2026

5.7

Vector

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

Exploitability: 0.5 / Impact: 5.2

Source: security-advisories@github.com (Secondary)

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.

Affected (1)

Products: Auth0: Nextjs Auth0

1 product

Configuration A

1 vulnerable

Vulnerable Software	Affected Versions
Auth0 Nextjs Auth0	From 4.9.0 to 4.12.1

Related CWEs

Incomplete List of Disallowed Inputs

The product implements a protection mechanism that relies on a list of inputs (or properties of inputs) that are not allowed by policy or otherwise require other action to neutralize before additional processing takes place, but the list is incomplete, leading to resultant weaknesses.

References (2)

https://github.com/auth0/nextjs-auth0/commit/35eb321de3345ccf23e8c0d6f66c9f2f2f57d26c

Source: security-advisories@github.com

Patch

https://github.com/auth0/nextjs-auth0/security/advisories/GHSA-mr6f-h57v-rpj5

Source: security-advisories@github.com

Vendor Advisory

Timeline

No history available yet.