CVE-2025-66478
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Critical React Server Components flaw (React2shell) allows unauthenticated remote code execution; Next.js also affected
A critical deserialization flaw in React Server Components, tracked as CVE-2025-55182 and nicknamed React2shell, can allow unauthenticated remote code execution; related Next.js App Router releases are covered by CVE-2025-66478. Patches are available and vendors and security firms advise applying fixes and using WAFs or access restrictions.
