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 :...

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: root@kitploit: sudo apt install...

CVE-2025-29927-Nextjs-Bypass-PoC

PoC: CVE-2025-29927 - Next.js Middleware Bypass This repository contains a Proof of Concept PoC demonstrating how to bypass middleware security checks in Next.js v13.5.6 by exploiting a vulnerability related to internal HTTP headers. Vulnerability Overview: CVE-2025-29927 What is it? CVE-2025-299...

Vuln-Next.js-CVE-2025-29927

root@kitploit: npx [email protected] Install packages root@kitploit: npm install -D @types/bcrypt npm install mysql2 npm install jose npm install -D @types/jsonwebtoken Prepare DB root@kitploit: CREATE TABLE users id INT PRIMARY KEY AUTOINCREMENT, username VARCHAR255 UNIQUE NOT NULL, passwor...

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...

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: root@kitploit: npm install 2. Start the development server: root@kitploit: npm run dev...

cve-2025-29927

CVE-2025-29927 1. go to /api/flag 2. add x-middleware-subrequest: src/middleware:src/middleware:src/middleware:src/middleware:src/middleware as header 3. see response...

CVE-2026-85594 Traefik v3.7.1 crossProviderNamespaces Bypass via Service Middleware

Traefik versions from v3.7.1 fail to enforce crossProviderNamespaces restrictions on the traefik.ingress.kubernetes.io/service.middlewares Service annotation in the Kubernetes Ingress provider. A namespace-limited tenant excluded from the allowlist can attach an operator-owned middleware to its...

CVE-2026-85184 @fastify/middie vulnerable to path-scoped middleware bypass via absolute-form request target

@fastify/middie versions = 9.1.0 and before 9.3.4 decide whether to run path-scoped middleware by matching against the raw request target, while the Fastify router resolves an absolute-form request target to its path before dispatching. Because the two layers evaluate different strings, a request...

CVE-2026-85184

@fastify/middie (a Fastify plugin for HTTP middleware) versions 9.1.0 through 9.3.3 are affected by a path-scoped middleware bypass. The root cause is a mismatch: middie evaluates the raw request target to decide whether to run path-scoped middleware, while the Fastify router resolves an absolute...

EUVD-2026-70979

@fastify/middie versions = 9.1.0 and before 9.3.4 decide whether to run path-scoped middleware by matching against the raw request target, while the Fastify router resolves an absolute-form request target to its path before dispatching. Because the two layers evaluate different strings, a request...

cve-2025-29927-lab

CVE-2025-29927 Lab Minimal reproduction lab for CVE-2025-29927 — Next.js middleware authorization bypass CVSS 9.1. Companion to: N-Day Analysis writeup on Medium What this is A Next.js 15.2.2 app vulnerable with a cookie-gated /dashboard route. The middleware auth check can be bypassed by sending...

CVE-2026-41452-PoC

CVE-2026-41452 — Krayin CRM Installer Auth Bypass → Admin Takeover CVSS 9.8 Critical · CWE-287 / CWE-306 · Jiva writeup · VulnCheck Summary Krayin CRM's installer exposes POST /install/api/admin-config-setup plus run-migration, run-seeder without CSRF protection withoutMiddleware'web' group. The...

PT-2026-84826

Name of the Vulnerable Software and Affected Versions Astro versions prior to 7.2.4 Description Astro improperly handles the removal of a configured non-root base path from request pathnames by using a string-prefix check that fails to verify path-segment boundaries. This allows an unauthenticate...

CVE-2026-82269

Gophish through 0.12.1 has a flaw in its API authentication middleware that fails to enforce account lockout and forced password change policies when a user authenticates with a valid API key. An attacker who already holds a valid API key can retain full API access even after the associated accou...

CVE-2026-53487 Kite has an authenticated cluster RBAC bypass in /api/v1/overview

Kite is a Kubernetes dashboard. Prior to version 0.12.3, authenticated Kite users with any role can request /api/v1/overview for a cluster that their roles do not permit by selecting that cluster with x-cluster-name. The overview route is registered before middleware.RBACMiddleware and GetOvervie...

Qinglong has an incomplete fix for CVE-2026-3965: Improper Authentication

Summary The init guard middleware in Qinglong only checks /api/user/init paths but not /open/user/init, which is whitelisted from JWT authentication and rewritten to /api/user/init after the guard has already passed, allowing unauthenticated admin credential reset on initialized instances. Affect...

CVE-2026-54136

Windmill is an open-source developer platform for internal code: APIs, background jobs, workflows and UIs. Prior to 1.715.0, a resource-scoped API token could read script contents outside its allowed path scope through GET /api/w/workspace/scripts/listsearch. The route-level scope middleware...

CVE-2026-73424 Astro: Unauthenticated path override in the @astrojs/vercel ISR function

Astro is a web framework for content-driven websites. From 10.0.3 until 11.0.3, the Astro Vercel adapter in packages/integrations/vercel/src/serverless/entrypoint.ts accepts xastropath for the public /isr function based only on the x-vercel-isr header, allowing unauthenticated GET requests to...

next.js: Next.js: Unauthorized access to protected content via middleware bypass

A flaw was found in Next.js. App Router applications that use middleware or proxy-based authorization checks are vulnerable to unauthorized access. A remote attacker can exploit this by crafting specific .rsc and segment-prefetch URLs, which bypass the intended middleware rules. This allows acces...