A serious Remote Code Execution vulnerability in React, identified as CVE-2025-55182, affects versions prior to December 2025. It exploits a deserialization flaw in React Server Components, allowing attackers to execute arbitrary code via crafted HTTP requests without authentication. Upgrading to patched versions is essential for security.

A remote code execution vulnerability affects specific versions of React and frameworks like Next.js using the App Router. Users of Next.js versions 15.x and 16.x need to update to patched versions immediately to mitigate the risk. Experimental canary releases starting from 14.3.0-canary.77 are also impacted.

The React2Shell vulnerability allows unauthenticated remote code execution in React Server Components, posing a significant risk for affected applications. Organizations using vulnerable versions must patch immediately to prevent exploitation. Runtime detection and WAF rules can offer temporary protection, but fixing the code is essential.

CVE-2025-55182 is a serious remote code execution flaw in React Server Components that allows attackers to execute arbitrary code via a single malicious HTTP request. Both Windows and Linux environments are affected, with exploitation attempts involving coin miners and other malware. Immediate action is needed to patch vulnerable systems and enhance security measures.