CVE-2026-2293 — CRITICAL (9.8)

Vulnerability Description

A NestJS application using @nestjs/platform-fastify can allow bypass of authentication/authorization middleware when Fastify path-normalization options are enabled. This issue affects nest.Js: 11.1.13.

CVSS Score

9.8

CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

HIGH

Affected Products

Vendor	Product	Versions
Nestjs	Nest	11.1.13

Related Weaknesses (CWE)

CWE-863

References

https://fluidattacks.com/advisories/netonThird Party AdvisoryExploit
https://github.com/nestjs/nest/Product
https://github.com/nestjs/nest/releases/tag/v11.1.14Release Notes

FAQ

What is CVE-2026-2293?

CVE-2026-2293 is a vulnerability with a CVSS score of 9.8 (CRITICAL). A NestJS application using @nestjs/platform-fastify can allow bypass of authentication/authorization middleware when Fastify path-normalization options are enabled. This issue affects nest.Js: 11.1...

How severe is CVE-2026-2293?

CVE-2026-2293 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.

Is there a patch for CVE-2026-2293?

Check the references section above for vendor advisories and patch information. Affected products include: Nestjs Nest.