Description
Next.js is a React framework for building full-stack web applications. In versions 16.0.0 through 16.2.10, crafted requests targeting Next.js applications using App Router built with Turbopack and a single entry in config.i18n.locales can bypass middleware/proxy based authentication. This issue has been fixed in version 16.2.11.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| vercel | next.js | >= 16.0.0, < 16.2.11 | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Wolfi
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Wolfi rolling | langfuse-3 +1 | 3.224.1-r0 | — |
| Wolfi rolling | langfuse-3-compat | 3.225.7-r6 | — |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| npm | next | >= 16.0.0, < 16.2.11 | 16.2.11 | GHSA-6gpp-xcg3-4w24 |
Advisories 1
- WID-SEC-2026-2468 Vercel Next.js: Mehrere Schwachstellen BSI CERT-Bund (WID) · Oct 4, 2026