Full Demo CVE 2025 29927 Next.js Middleware Authorization Bypass Vulnerability скачать в хорошем качестве

Full Demo CVE 2025 29927 Next.js Middleware Authorization Bypass Vulnerability

Understanding the Vulnerability What is the Issue? The vulnerability stems from improper authorization handling in Next.js middleware, where an attacker could manipulate request headers (particularly X-Middleware-Subrequest: src/middleware:nowaf) to trick the middleware into skipping security checks. Root Cause Analysis Next.js middleware relies on internal headers like X-Middleware-Subrequest: src/middleware:nowaf to distinguish between user requests and internal subrequests If an attacker forges this header, they might bypass middleware-based authentication This becomes possible when: The middleware fails to validate request sources properly The application trusts internal headers without strict verification Proof of Concept Using PinewoodStore Code https://techtalkpine.com/2025/03/demo... Docker-Lab-   • 🚨 NextJS CVE 2025 29927 Docker Lab with Demo