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...

Vuln-Next.js-CVE-2025-29927

npx [email protected] Install packages npm install -D @types/bcrypt npm install mysql2 npm install jose npm install -D @types/jsonwebtoken Prepare DB CREATE TABLE users id INT PRIMARY KEY AUTOINCREMENT, username VARCHAR255 UNIQUE NOT NULL, password VARCHAR255 NOT NULL ; Run npm run dev...

PoC-CVE-2025-29927

PoC-CVE-2025-29927 what is the vuln? this cve reports an flaw in the header x-middleware-subrequest, responsible to takes internal requests in next.js, who allow an attacker bypass the authorization middlewares in next.js 15.0.0 and acess protected routes, for example real example in a webapp,...

CVE-2025-29927_Scanner

CVE-2025-29927 Checker 📌 Introduction This script checks for the CVE-2025-29927 vulnerability in Next.js servers by testing multiple payloads in the x-middleware-subrequest header to detect unauthorized access. ❓ What is CVE-2025-29927? CVE-2025-29927 is a vulnerability that allows security...

CVE-2025-29927

Next.js Vulnerability Demo CVE-2025-29927 This repository contains a demonstration of the Next.js vulnerability CVE-2025-29927, which affects Next.js version 15.2.2 and earlier. The vulnerability allows attackers to bypass middleware authentication checks by setting an x-middleware-subrequest...

CVE-2025-29927

CVE-2025-29927: The Next.js Middleware Nightmare This repository is provided strictly for educational purposes only. I did not discover this vulnerability - this is a demonstration and explanation of a publicly disclosed security issue. Using this knowledge to exploit vulnerable systems without...

CVE-2026-111757

The Hono web application framework (versions 4.12.4 through 4.13.11 ) contains a vulnerability in the serveStatic component. The issue stems from double decoding a routed request path before filesystem lookup, allowing malformed percent-encoded paths to bypass upstream routing middleware. This by...

CVE-2026-111757 Hono: `serveStatic` decodes the request path a second time, leading to bypass of middleware on static paths

Hono is a Web application framework that provides support for any JavaScript runtime. From 4.12.4 until 4.13.11, serveStatic can interpret a malformed percent-encoded path differently from upstream routing middleware and bypass protection for a static prefix. The root cause is serveStatic decodes...

CVE-2026-111757 Hono: `serveStatic` decodes the request path a second time, leading to bypass of middleware on static paths

Hono is a Web application framework that provides support for any JavaScript runtime. From 4.12.4 until 4.13.11, serveStatic can interpret a malformed percent-encoded path differently from upstream routing middleware and bypass protection for a static prefix. The root cause is serveStatic decodes...

POC-CVE-2025-29927-

Affected Next.js 15.x 15.2.3, 14.x 14.2.25, Next.js 13.x 13.5.9 Self-hosted setups that use Middleware for critical functionality, such as authentication. Guide npm run dev curl --compressed -X GET http://localhost:3000/dashboard \ -H "Host: localhost:3000" \ -H "sec-ch-ua: "Chromium";v="135",...

cve-2025-29927

CVE-2025-29927 CVE-2025-29927 Vulnerability All versions of Next.js from 11.1.4 through 13.5.6, 14.x before 14.2.25, and 15.x before 15.2.3 are affected by this vulnerability. The impact is particularly significant for applications that rely on middleware for implementing access controls, as...