[BUG] status 404 not respected for NextResponse.rewrite

[yoohahn]

Describe the bug

When I send a rewrite with status 404 this is not respected and we get a 200 out to the client.

export async function middleware(req: NextRequest) {
  if (req.nextUrl.pathname === "/nope") {
    const url = new URL("/notFound", req.url);
    return NextResponse.rewrite(url.toString(), {
      status: 404,
    });
  }
  return NextResponse.next();
}

Steps to reproduce

1. Fork https://github.com/yoohahn/opennext-404-rewrites
2. yarn preview
3. http://localhost:8787/nope

Expected behavior

Status should be 404 but is 200

@opennextjs/cloudflare version

1.3.1

Wrangler version

4.24.0

next info output

Operating System:
  Platform: linux
  Arch: x64
  Version: #202412060638~1748542656~22.04~663e4dc SMP PREEMPT_DYNAMIC Thu M
  Available memory (MB): 31765
  Available CPU cores: 20
Binaries:
  Node: 24.0.1
  npm: 11.3.0
  Yarn: 4.6.0
  pnpm: N/A
Relevant Packages:
  next: 15.3.4
  eslint-config-next: N/A
  react: 19.1.0
  react-dom: 19.1.0
  typescript: 5.7.3
Next.js Config:
  output: N/A

Additional context

It looks like the same issue I reported for next on pages and added a patch for;

cloudflare/next-on-pages#953

[vicb]

We should add the result to the middleware event and propagate it.

Moving to aws where the code is