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Two serious vulnerabilities—CVE-2025-55184 (denial of service) and CVE-2025-55183 (Server Actions source code exposure)—were disclosed in December 2025, impacting Next.js App Router applications using React Server Components. This article explains how the bugs work, which versions are affected, and how to patch and harden your application.
React Server Components (RSC) recently suffered a critical remote code execution vulnerability, along with new denial-of-service and source code exposure flaws impacting the React 19 ecosystem. This article explains what went wrong, who is affected, how the attacks work, and the concrete steps developers should take to patch and secure their applications.
TypeScript enhances JavaScript by adding static typing, powerful tooling, and better code structure. Learn its key features, benefits, and real-world use cases for modern web development.
Learn the best practices for using TypeScript with Next.js to build scalable, type-safe, and maintainable web applications with improved developer experience.
Learn how to use Axios interceptors in React to manage HTTP requests efficiently, handle authentication, centralize error handling, and keep your code clean and scalable.
JSON Web Tokens (JWT) provide a secure and scalable solution for authentication and authorization in modern web applications. Learn how JWT works, its structure, use cases, and best practices.
