CVE-2026-2293
Modified Modified - Updated After Analysis

Authentication Bypass in NestJS @nestjs/platform-fastify Module

Publication date: 2026-02-27

Last updated on: 2026-06-30

Assigner: Fluid Attacks

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.

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Meta Information

Published
2026-02-27
Last Modified
2026-06-30
Generated
2026-07-06
AI Q&A
2026-02-27
EPSS Evaluated
2026-07-05
NVD
CVE-2026-2293
EUVD
EUVD-2026-9034

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
nestjs nest 11.1.13

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-551 If a web server does not fully parse requested URLs before it examines them for authorization, it may be possible for an attacker to bypass authorization protection.
CWE-863 The product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check.

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Impact Analysis

The vulnerability can lead to unauthorized access because attackers may bypass authentication and authorization controls. This could allow them to access protected resources or perform actions without proper permissions.

Executive Summary

This vulnerability exists in a NestJS application that uses the @nestjs/platform-fastify package. When Fastify's path-normalization options are enabled, it can allow an attacker to bypass authentication and authorization middleware.

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