Packages / next / Security

CriticalVulnerabilityGHSA-673q-mjm6-r5xrPublished 22 Oct 2026

Next.js: Unauthenticated Remote Code Execution in `use cache` functions returning typed arrays

Affected releases · next

  • 16.x16.0.0 – 16.4.0Fixed in 16.4.1

On 16.x, the newest line:

npm install next@16.4.1

  1. Not affected

    0.1.0 – 15.5.28

    378 releases

  2. Affected

    16.0.0 – 16.4.0

    43 releases

  3. Fixed

    16.4.1 – 16.4.2

    2 releases, latest

423 stable releases of next, oldest to newest.

Is your project affected?

Paste your package.json, or type the range you declare for next. It is read in your browser and sent nowhere.

What happens

Impact

A vulnerability in applications using App router with Cache Component can lead to remote code execution. The application needs to have a use cache function that returns multiple typed arrays.

Workaround

There is no known workaround for affected applications with such use cache functions. You should upgrade immediately even if your application does not have similar functions.