high8.7
CVE-2026-33011
Nest Fastify HEAD Request Middleware Bypass
Impact
### Impact 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. ### Patches Fixed in `@nestjs/platform-fastify@11.1.16`
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| npm | @nestjs/platform-fastify | <= 11.1.15 | 11.1.16 |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Nestjs | Nest | before 11.1.16 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/nestjs/nest/commit/cbdf737cd6e7cefa52d05ecea2ae4af95c464614
- https://github.com/nestjs/nest/releases/tag/v11.1.17
- https://github.com/nestjs/nest/security/advisories/GHSA-wf42-42fg-fg84
- https://github.com/advisories/GHSA-wf42-42fg-fg84
- https://nvd.nist.gov/vuln/detail/CVE-2026-33011