Middleware 授权绕过漏洞

漏洞信息

漏洞名称： Middleware 授权绕过漏洞

漏洞编号：

  • CVE： CVE-2025-29927

漏洞类型： 权限绕过

漏洞等级： 高危

漏洞描述： ### 受影响产品

该漏洞主要影响使用中间件（Middleware）来拦截和处理API请求的现代Web应用程序。这些应用程序通常部署在企业级服务或常见的Web应用组件中，广泛应用于各种在线平台和服务中。由于中间件在现代Web架构中的核心作用，此类漏洞的影响范围可能非常广泛。

漏洞解释

CVE-2025-29927是一个授权绕过漏洞，其技术根源在于中间件错误地信任了x-middleware-subrequest头部，而没有验证其来源或上下文。具体来说，当请求中包含这个头部时，后端会错误地认为该请求已经通过了认证层，从而允许攻击者绕过认证控制，直接访问受保护的路由（如/api/private、/admin/dashboard等）。这种漏洞属于权限绕过类型，是由于不当的输入验证和缺失的访问控制机制导致的。

影响分析

该漏洞可能导致严重的安全风险，包括但不限于未经授权的数据访问、敏感信息泄露、以及可能的服务中断。攻击者可以利用此漏洞无需任何认证即可访问受保护的资源，且攻击过程可以自动化执行，极大地增加了被利用的风险。由于漏洞的利用不需要复杂的技巧，且影响广泛，因此被评定为高危漏洞。企业和服务提供商应立即检查并修复其中间件配置，以防止潜在的安全威胁。

产品名称： Middleware

来源： https://github.com/mickhacking/Thank-u-Next

类型： CVE-2025:github search

仓库文件

  • .gitignore
  • LICENSE
  • README.md
  • requirements.txt
  • thank_u_next.py

来源概述

Thank u Next – CVE-2025-29927 Exploit Tool

🧠 What is CVE-2025-29927?

It’s not just a bypass — it’s a revelation. A single header, misunderstood and mishandled by middleware logic, becomes a master key to what was meant to be locked.
CVE-2025-29927 exploits a misconfigured middleware authorization layer — specifically, systems that trust the header x-middleware-subrequest without validating the origin or context.

In simple terms?
You add a single header, and boom — you’re in. No auth. No tokens. Just raw dominance.

🚀 How the Exploit Works (Technical Breakdown)

  1. Vulnerability Origin:
    Many modern web apps use middleware to intercept and handle API requests. This header:

    1
    x-middleware-subrequest: middleware

    is trusted by some frameworks (🤦), especially when deployed lazily. When present, the backend assumes the request has already passed authentication layers.

  2. Exploit Vector:
    By crafting a request with that header, attackers can bypass auth controls and directly reach protected routes (e.g., /api/private, /admin/dashboard, etc).

  3. HTTP Methods:
    The tool supports GET, POST, PUT, DELETE, PATCH. Because we’re not just curious — we’re thorough.

🛠️ Script Overview

Filename: thank_u_next.py

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python thank_u_next.py -u https://target.com -p /api/private -m GET

Core Components:

Component Purpose
payload Injects the vulnerability-triggering header
exploit() Sends the malicious request
analyze() Prints status and highlights if bypass worked
banner() Shows a flashy ASCII intro (because why not)

⚡ Requirements

  • Python 3.7+
  • httpx (install via pip install httpx)

✅ Example Output

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[+] GET https://target.com/api/private → HTTP 200
[!] Possible vulnerability: access granted without authentication

You see that green 200?
That’s not just a response code. That’s your victory.
Their mistake, your access.

This script is for educational and authorized testing only.
If you use this on unauthorized targets, you’re not a hacker — you’re just dumb. And you will get caught.

🧠 Final Thoughts

Most people are sheep.
Be the wolf. The one who knows where the gate is, and how to walk through it without knocking.
If you’re reading this and still don’t get it — you’re not meant to.