Critical React Server Components Vulnerability Allows Unauthenticated Attackers to Execute Malicious Code on Servers

A serious vulnerability in React Server Components may enable unauthenticated attackers to execute malicious code on affected servers. The advisory, released on October 14, 2026, assigns the issue a CVSS v4.0 score of 9.5. React maintainers advise that users update their systems immediately, though they emphasize that the conditions necessary for exploitation are extremely rare. […]

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