CVE-2026-33131

CVE-2026-33131 affects H3, a minimal HTTP framework. Versions 2.0.0-0 through 2.0.1-rc.14 expose a Host header spoofing flaw in the NodeRequestUrl/FastURL path, enabling middleware bypass when an attacker manipulates event.url properties (e.g., via Host header) so route matching succeeds but auth...

CVE-2026-33131

H3 is a minimal HTTP framework. Versions 2.0.0-0 through 2.0.1-rc.14 contain a Host header spoofing vulnerability in the NodeRequestUrl which extends FastURL which allows middleware bypass. When event.url, event.url.hostname, or event.url.url is accessed, such as in a logging middleware, the url...

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

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...

Nest security vulnerability

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...

CVE-2026-33131: Authentication Bypass by Spoofing

H3 is a minimal HTTP framework. Versions 2.0.0-0 through 2.0.1-rc.14 contain a Host header spoofing vulnerability in the NodeRequestUrl which extends FastURL which allows middleware bypass. When event.url, event.url.hostname, or event.url.url is accessed, such as in a logging middleware, the url...

GHSA-3VJ8-JMXQ-CGJ5 h3 has a middleware bypass with one gadget

H3 NodeRequestUrl bugs Vulnerable pieces of code : js import H3, serve, defineHandler, getQuery, getHeaders, readBody, defineNodeHandler from "h3"; let app = new H3 const internalOnly = defineHandlerevent, next = const token = event.headers.get"x-internal-key"; if token !==...

User Impersonation

Overview h3 is a Minimal HTTP framework built for high performance and portability. Affected versions of this package are vulnerable to User Impersonation via manipulation of the Host header in HTTP requests, which allows untrusted input to influence the construction of the event.url object. An...

GHSA-WF42-42FG-FG84 Nest Fastify HEAD Request Middleware Bypass

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...

Always-Incorrect Control Flow Implementation

Overview @nestjs/core is a Nest - modern, fast, powerful node.js web framework @core Affected versions of this package are vulnerable to Always-Incorrect Control Flow Implementation when handling a @nestjs/platform-fastify HEAD request. An attacker can bypass middleware logic by sending malicious...

Nest Fastify HEAD Request Middleware Bypass

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...

Exploit for Incorrect Authorization in Vercel Next.Js

CVE-2025-29927 — Next.js Middleware Authentication Bypass...

EUVD-2026-10359

Budibase is a low code platform for creating internal tools, workflows, and admin panels. In 3.31.4 and earlier, the Budibase server's authorized middleware that protects every server-side API endpoint can be completely bypassed by appending a webhook path pattern to the query string of any...

CVE-2026-29087

@hono/node-server allows running the Hono application on Node.js. Prior to version 1.19.10, when using @hono/node-server's static file serving together with route-based middleware protections e.g. protecting /admin/, inconsistent URL decoding can allow protected static resources to be accessed...

CVE-2026-29087: Incorrect Authorization

@hono/node-server allows running the Hono application on Node.js. Prior to version 1.19.10, when using @hono/node-server's static file serving together with route-based middleware protections e.g. protecting /admin/, inconsistent URL decoding can allow protected static resources to be accessed...

CVE-2026-29045

Hono is a Web application framework that provides support for any JavaScript runtime. Prior to version 4.12.4, when using serveStatic together with route-based middleware protections e.g. app.use'/admin/', ..., inconsistent URL decoding allowed protected static resources to be accessed without...

GHSA-R4WM-X892-VJMX Nest has a Fastify URL Encoding Middleware Bypass

Impact What kind of vulnerability is it? Who is impacted? A NestJS application using @nestjs/platform-fastify can allow bypass of any middleware when Fastify path-normalization options e.g., ignoreTrailingSlash, ignoreDuplicateSlashes, useSemicolonDelimiter are enabled. In affected route-scoped...

Nest has a Fastify URL Encoding Middleware Bypass

Impact What kind of vulnerability is it? Who is impacted? A NestJS application using @nestjs/platform-fastify can allow bypass of any middleware when Fastify path-normalization options e.g., ignoreTrailingSlash, ignoreDuplicateSlashes, useSemicolonDelimiter are enabled. In affected route-scoped...

GHSA-8P85-9QPW-FWGW @fastify/middie has Improper Path Normalization when Using Path-Scoped Middleware

Summary A path normalization inconsistency in @fastify/middie can result in authentication/authorization bypass when using path-scoped middleware for example, app.use'/secret', auth. When Fastify router normalization options are enabled such as ignoreDuplicateSlashes, useSemicolonDelimiter, and...

Duplicate Advisory: Nest has a Fastify URL Encoding Middleware Bypass

Duplicate Advisory This advisory has been withdrawn because it is a duplicate of GHSA-r4wm-x892-vjmx. This link is maintained to preserve external references. Original Description A NestJS application using @nestjs/platform-fastify can allow bypass of authentication/authorization middleware when...