https://cve.radiocsirt.org/rss/recent/all/10 Most recent entries from all 2026-10-06T07:35:21.132603+00:00 Vulnerability-Lookup csirt@opendfir.org python-feedgen Contains only the most 10 recent entries. https://cve.radiocsirt.org/vuln/euvd-2026-263237 EUVD-2026-263237 2026-10-06T07:35:21.178982+00:00 EUVD-2026-263237 https://cve.radiocsirt.org/vuln/fkie_cve-2025-67716 fkie_cve-2025-67716 2026-10-06T07:35:21.179024+00:00

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.

 https://cve.radiocsirt.org/vuln/ghsa-mr6f-h57v-rpj5 GHSA-mr6f-h57v-rpj5 — Improper Validation of Query Parameters in Auth0 Next.js SDK 2026-10-06T07:35:21.179070+00:00

Affected: npm: @auth0/nextjs-auth0

### Description An input-validation flaw in the returnTo parameter in the Auth0 Next.js SDK 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

### Am I Affected? You are affected if you meet the following preconditions: - Applications using the auth0/nextjs-auth0 SDK version prior to 4.13.0

### Affected product and versions Auth0/nextjs-auth0 versions >= 4.9.0 and < 4.13.0

### Resolution Upgrade Auth0/nextjs-auth0 version to v4.13.0

### Acknowledgements Okta would like to thank Joshua Rogers (MegaManSec) for their discovery and responsible disclosure.