Critical RSC Bugs in React and Next.js Allow Unauthenticated Remote Code Execution

Critical RSC Bugs in React and Next.js Allow Unauthenticated Remote Code Execution

Dec 03, 2025Ravie LakshmananVulnerability / Cloud Security A maximum-severity security flaw has been disclosed in React Server Components (RSC) that, if successfully exploited, could result in remote code execution. The vulnerability, tracked as CVE-2025-55182, carries a CVSS score of 10.0. It allows “unauthenticated remote code execution by exploiting a flaw in how React decodes payloads…