Critical RSC Bugs in React and Next.js Allow Unauthenticated Remote Code Execution
Vulnerability / 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 sent to React Server Function endpoints," the React Team said in an alert issued today.
"Even if your app does not implement any React S...
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