CVE-2026-33011: Nest Fastify HEAD Request Middleware Bypass

In a NestJS application using @nestjs/platform-fastify, GET middleware can be bypassed because Fastify automatically redirects HEAD requests to the corresponding GET handlers (if they exist).

As a result:

• Middleware will be completely skipped.
• The HTTP response won’t include a body (since the response is truncated when redirecting a HEAD request to a GET handler).
• The actual handler will still be executed.