Everyone's Talking About This React Exploit

Josh discusses a critical security vulnerability in React server components and Next.js, emphasizing the risk of unauthenticated remote code execution. He explains that even apps not using React server functions are vulnerable and highlights the severity of the issue, which received a CVSS score of 10.0. Josh details how the React and Next.js teams released patches and firewalls to address the vulnerability, urging listeners to update their packages immediately. He also explores a potential, though unconfirmed, proof of concept to illustrate how the exploit might work, focusing on insecure deserialization and the importance of proper property checks to prevent unauthorized code access.