nextjs-middleware-exploit

Next.js Middleware Vulnerability Research CVE-2025-29927 This repository demonstrates a critical vulnerability in Next.js middleware CVE-2025-29927, which affects versions 11.1.4 through 15.1.7. This vulnerability allows for authorization bypass , CSP bypass , and potential DoS attacks through...

nextjs-vulnerable-app

Next.js Authentication App This is a Next.js application that implements authentication using NextAuth.js. The app features protected routes that require users to be authenticated to access certain pages. Project Structure nextjs-auth-app ├── components │ ├── Layout.js Layout component for...

NextSploit

🔍 NextSploit: Next.js CVE-2025-29927 Scanner & Exploiter ⚠️ NextSploit is a command-line tool designed to detect and exploit CVE-2025-29927 , a security flaw in Next.js. The tool first identifies if a target website is running Next.js and determines whether its version falls within the vulnerable...

CVE-2026-112712

@fastify/middie is the Express-style middleware engine for Fastify. In versions from 9.0.0 through 9.3.5, the use function joined a path-scoped middleware's mount path to the plugin scope prefix in a way that could diverge from the path Fastify's router serves, most often when the scope prefix...

CVE-2026-112712

The @fastify/middie middleware engine for Fastify (versions 9.0.0 through 9.3.5 ) is vulnerable to a path-scoped middleware bypass . The use() function incorrectly joins mount paths with plugin scope prefixes, specifically when the prefix ends in a slash, contains array mount paths, or lacks a le...

EUVD-2026-105361

@fastify/middie is the Express-style middleware engine for Fastify. In versions from 9.0.0 through 9.3.5, the use function joined a path-scoped middleware's mount path to the plugin scope prefix in a way that could diverge from the path Fastify's router serves, most often when the scope prefix...

CVE-2026-112712 @fastify/middie vulnerable to path-scoped middleware bypass via scope prefix mismatch

@fastify/middie is the Express-style middleware engine for Fastify. In versions from 9.0.0 through 9.3.5, the use function joined a path-scoped middleware's mount path to the plugin scope prefix in a way that could diverge from the path Fastify's router serves, most often when the scope prefix...

CVE-2025-29927

Next.js CVE-2025-29927 This repository contains a proof of concept for CVE-2025-29927 vulnerability in Next.js, where the internal header x-middleware-subrequest can be exploited to bypass middleware checks such as authentication. Affected Versions Next.js 15.x 🧪 This project was tested with...

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

overview after reading write up of @zhero in his personal blogpost i decide to build this CTF to learn how things work and after that i decide to share it with anybody who wants to learn how exploit this vulnerability so Big shout out to zhero & inzo and you can find their blogpost here :...

GHSA-5R4P-P66F-JHC7 Hono: `serveStatic` decodes the request path a second time, leading to bypass of middleware on static paths

Summary serveStatic decodes the request path a second time after Hono has already decoded it for routing. A crafted request can be routed as one path and served as another, so middleware mounted on a static prefix does not run for a file under that prefix. Details Hono decodes the request path on...

Hono: `serveStatic` decodes the request path a second time, leading to bypass of middleware on static paths

Summary serveStatic decodes the request path a second time after Hono has already decoded it for routing. A crafted request can be routed as one path and served as another, so middleware mounted on a static prefix does not run for a file under that prefix. Details Hono decodes the request path on...

NPM: Hono: `serveStatic` decodes the request path a second time, leading to bypass of middleware on static paths

NPM: Hono: serveStatic decodes the request path a second time, leading to bypass of middleware on static paths vulnerability discovered by ? in WordPress Npm hono versions = 4.12.4, 4.13.11...

CVE-2025-29927

🔍 CVE-2025-29927 - Next.js Middleware Bypass Detector This Python-based smart scanner helps detect the CVE-2025-29927 vulnerability in Next.js applications — a critical middleware bypass that allows attackers to skip authentication using a crafted HTTP header. 🧠 The tool identifies not only HTTP...

NextJS-Exploit-

NextSploit: Next.js CVE-2025-29927 Scanner & Exploiter NextSploit is a command-line tool designed to detect and exploit CVE-2025-29927 , a security flaw in Next.js. The tool first identifies if a target website is running Next.js and determines whether its version falls within the vulnerable rang...

CVE-2025-29927

Next.js Middleware Bypass Checker | CVE-2025-29927 Automated Bash tool to detect Next.js applications vulnerable to the middleware bypass CVE-2025-29927 , based on research by Zhero Web Security. Requirements bash whatweb curl Install them on Debian/Ubuntu with: sudo apt install whatweb curl Usag...

CVE-2025-29927_demo

CVE-2025-29937 Reproduction Steps npm i npm run dev curl -H "x-middleware-subrequest: middleware:middleware:middleware:middleware:middleware" http://localhost:3000/protected...

poc-nextjs-CVE-2025-29927

Next.js Middleware Subrequest Vulnerability Scanner A robust proof of concept PoC tool to detect the Next.js middleware vulnerability CVE-2025-29927. Overview This tool tests a critical vulnerability in Next.js applications where the x-middleware-subrequest header can be used to bypass security...

NextJS_CVE-2025-29927

Next.js Authorization Bypass Demo This application demonstrates the x-middleware-subrequest vulnerability in Next.js 13.4.19, which allows bypassing middleware protection. Setup 1. Install dependencies: npm install 2. Start the development server: npm run dev Vulnerability Demonstration The...

next-js-auth-bypass

Hello World - Next.js 12.2 A simple proof of concept Next.js 12.2 application. 🚀 Quick Start 1. Install Dependencies npm install 2. Run the Development Server npm run dev The application will be available at http://localhost:3000 🛠️ Available Scripts npm run dev - Start development server npm...

Next.Js-middleware-bypass-vulnerability-CVE-2025-29927

A basic proof of concept of the CVE-2025-29927 vulnerability that allows to bypass the middleware scripts. Details: Read Here This uses Next.js version 15.2.2. The vulnerability allows the user to bypass the middleware script which contains the verification and can access the admin page without...