π¨ Critical React + Next.js RCE Alert π¨
New flaws in the React Server Components βFlightβ protocol (CVE-2025-55182 & CVE-2025-66478) allow unauthenticated remote code execution on default installations.
Attackers only need one malicious HTTP request to take over a server.
Wiz reports 39% of cloud environments are vulnerable.
If you're running:
β’ React 19.0β19.2
β’ Next.js 14.3.0-canary, 15.x, 16.x (App Router)
β’ Any framework bundling react-server (Redwood, Waku, Vite/Parcel RSC plugins, etc.)
π You are likely exposed. Patch immediately.
Updates now available:
React 19.0.1 / 19.1.2 / 19.2.1
Next.js 14.3.0-canary.88 / 15.0.5+ / 16.0.7
Full RCE. Remote. Unauthenticated. Near-100% exploit reliability.
Patch today. Do not wait.