What is CVE-2025-55182?

Unauthenticated RCE in React Server Components via bad payload deserialization. CVSS 10.0. Hits React 19.0-19.2.0 and frameworks like Next.js.

How do I fix React Server Components vulnerability ?

Upgrade React to 19.0.1+, Next.js per version (e.g., next@14.2.35). Run npm ls on server-dom packages. Check framework blogs.

Is Next.js safe after patching?

Yes, if on listed versions. But audit deps. Temp hosting mitigations exist—don't rely solely.

🔒 Security & Privacy

React Server Components' Perfect-Score RCE Flaw Exposes Millions of Apps

React's shiny Server Components promised edge performance. Then came CVE-2025-55182: unauthenticated RCE with a perfect 10.0 score. Devs worldwide scrambling.

theAIcatchup Apr 07, 2026 4 min read

Warning alert for critical React Server Components remote code execution vulnerability

⚡ Key Takeaways

CVSS 10.0 RCE flaw in React Server Components affects even non-Server Function apps. 𝕏
Next.js, React Router, and bundlers like Vite/Parcel need immediate patches. 𝕏
Exposes risks in RSC hype—expect adoption pause amid deserialization dangers. 𝕏

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#Next.js security #React 19 patch #React Server Components #React Server Components vulnerability

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Originally reported by React Blog

⚡ Key Takeaways

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