Vulnerability Description
Nest is a framework for building scalable Node.js server-side applications. In versions 11.1.15 and below, 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), and the actual handler will still be executed. This issue is fixed in version 11.1.16.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Nestjs | Nest | < 11.1.16 |
Related Weaknesses (CWE)
References
- https://github.com/nestjs/nest/commit/cbdf737cd6e7cefa52d05ecea2ae4af95c464614Patch
- https://github.com/nestjs/nest/releases/tag/v11.1.17ProductRelease Notes
- https://github.com/nestjs/nest/security/advisories/GHSA-wf42-42fg-fg84Vendor Advisory
FAQ
What is CVE-2026-33011?
CVE-2026-33011 is a vulnerability with a CVSS score of 7.5 (HIGH). Nest is a framework for building scalable Node.js server-side applications. In versions 11.1.15 and below, a NestJS application using @nestjs/platform-fastify GET middleware can be bypassed because Fa...
How severe is CVE-2026-33011?
CVE-2026-33011 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-33011?
Check the references section above for vendor advisories and patch information. Affected products include: Nestjs Nest.