A critical security vulnerability was found in React Server Components. Details: React advisory: [https://react.dev/blog/2025/12/03/critical-security-vulnerability-in-react-server-components](https://react.dev/blog/2025/12/03/critical-security-vulnerability-in-react-server-components?utm_source=chatgpt.com) Next.js advisory: [https://nextjs.org/blog/CVE-2025-66478](https://nextjs.org/blog/CVE-2025-66478?utm_source=chatgpt.com)