CVE-2026-54281 Nest: Middleware Bypass on Fastify via Trailing Slash

Nest is a framework for building scalable Node.js server-side applications. Prior to 11.1.24, an authentication bypass vulnerability exists in @nestjs/platform-fastify. When middleware is registered through NestJS's MiddlewareConsumer.forRoutes API on the Fastify adapter, an unauthenticated clien...

CVE-2026-54281

The CVE concerns NestJS with the Fastify adapter: an authentication bypass exists in @nestjs/platform-fastify before version 11.1.24 when middleware is registered via MiddlewareConsumer.forRoutes(). A trailing slash on the request URL can bypass route-specific Nest middleware on the default Fasti...

CVE-2026-40879

A flaw was found in Nest, a framework for building scalable Node.js server-side applications. A remote attacker can exploit this vulnerability by sending numerous small, valid JSON JavaScript Object Notation messages within a single TCP Transmission Control Protocol frame. This action causes the...

CVE-2026-40879

Nest is a framework for building scalable Node.js server-side applications. Prior to 11.1.19, when an attacker sends many small, valid JSON messages in one TCP frame, handleData recurses once per message; the buffer shrinks each call. maxBufferSize is never reached; call stack overflows instead. ...

CVE-2026-40879 Nest: DoS via Recursive handleData in JsonSocket (TCP Transport)

Nest is a framework for building scalable Node.js server-side applications. Prior to 11.1.19, when an attacker sends many small, valid JSON messages in one TCP frame, handleData recurses once per message; the buffer shrinks each call. maxBufferSize is never reached; call stack overflows instead. ...

CVE-2026-40879

Summary: Nest (Node.js) suffers a DoS via recursive handling of JSON frames over TCP. Before 11.1.19, handleData() recursed for each valid JSON message in a single frame, causing call stack growth and eventual RangeError when a ~47 KB payload is sent. This is fixed in 11.1.19. What’s affected: Th...

CVE-2026-35515

Nest is a framework for building scalable Node.js server-side applications. Prior to 11.1.18, SseStream.transform interpolates message.type and message.id directly into Server-Sent Events text protocol output without sanitizing newline characters \r, \n. Since the SSE protocol treats both \r and ...

CVE-2026-35515

Nest is a framework for building scalable Node.js server-side applications. Prior to 11.1.18, SseStream.transform interpolates message.type and message.id directly into Server-Sent Events text protocol output without sanitizing newline characters \r, \n. Since the SSE protocol treats both \r and ...

CVE-2026-35515 @nestjs/core Improperly Neutralizes Special Elements in Output Used by a Downstream Component ('Injection')

Nest is a framework for building scalable Node.js server-side applications. Prior to 11.1.18, SseStream.transform interpolates message.type and message.id directly into Server-Sent Events text protocol output without sanitizing newline characters \r, \n. Since the SSE protocol treats both \r and ...

CVE-2026-35515

NestJS/core (@nestjs/core) contains a vulnerability in SseStream._transform() where un sanitized interpolation of upstream data into SSE output allows an attacker to inject arbitrary SSE events, spoof event types, and corrupt reconnection state. The issue arises from inserting message.type and me...

CVE-2026-33011

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...

CVE-2026-33011

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...

CVE-2026-33011 Nest Fastify HEAD Request Middleware Bypass

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...

CVE-2026-33011

CVE-2026-33011 affects Nest with @nestjs/platform-fastify: in versions 11.1.15 and earlier, Fastify’s HEAD-to-GET redirect can bypass GET middleware, causing middleware to be skipped while the GET handler still runs and the response lacks a body. The issue is fixed in version 11.1.16. Remediate b...

nest 安全漏洞

Nest is a Node.js framework developed by NestJS, designed for building efficient, scalable, and enterprise-level server-side applications using TypeScript/JavaScript. Versions of Nest 11.1.15 and earlier contain security vulnerabilities. These vulnerabilities stem from Fastify automatically...

PT-2026-25990

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...

PT-2026-22347

Name of the Vulnerable Software and Affected Versions Nest.js version 11.1.13 Description A NestJS application utilizing the @nestjs/platform-fastify package may experience a bypass of authentication and authorization middleware when Fastify path-normalization options are enabled. This can...

EUVD-2025-205611

Nest has a Fastify URL Encoding Middleware Bypass TOCTOU...

CVE-2025-69211

Nest is a framework for building scalable Node.js server-side applications. Versions prior to 11.1.11 have a Fastify URL encoding middleware bypass. A NestJS application is vulnerable if it uses @nestjs/platform-fastify; relies on NestMiddleware via MiddlewareConsumer for security checks...

CVE-2025-69211

CVE-2025-69211 affects Nest.js applications using the Fastify platform integration before version 11.1.11. The issue is a bypass in the Fastify URL encoding middleware that can skip security checks implemented via NestMiddleware (via MiddlewareConsumer) or app.use(), particularly when middleware ...