In this post, I will talk about the React 19 security audit: and show you how to hardening your app against “React2Shell” and RSC vulnerabilities. TL;DR The rollout of React 19 Server Components (RSC) fundamentally shifted the application attack surface. This led to critical late-2025 and early-2026 deserialization vulnerabilities, headlined by the CVSS 10.0 “React2Shell.” […]
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