DEFENDING AGAINST THE CVE-2025-55182 (REACT2SHELL) VULNERABILITY IN REACT SERVER COMPONENTS

Summary from the TLDR InfoSec newsletter

CVE-2025-55182, also known as React2Shell, is a critical remote code execution vulnerability in React Server Components and frameworks such as Next.js that allows attackers to execute arbitrary code with a single malicious HTTP request on vulnerable servers. Default configurations are affected and reliable public exploits exist. Attackers can gain initial access without authentication and then deploy tools such as reverse shells, RATs, cryptominers, and credential harvesters across Windows and Linux environments.