Fix React Server Components RCE vulnerability#1111
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## React Flight / Next.js RCE Advisory - Analysis and Resolution ### Project Analysis This project (hiro-systems-docs) has been analyzed for vulnerability to the React Flight / Next.js RCE advisory. ### Findings **Affected Status: NOT VULNERABLE - Already Patched** The project is a Next.js application with the following relevant dependencies: - **next**: 15.3.6 (patched version) - **react**: 19.0.0 (no manual update needed for Next.js) - **react-dom**: 19.0.0 (no manual update needed for Next.js) - **React Flight packages**: None detected (react-server-dom-webpack, react-server-dom-parcel, react-server-dom-turbopack not in use) ### Resolution **No changes were required.** The project is already running the patched version of Next.js for the 15.3.x minor series: - Next.js 15.3.x: ✅ Already at 15.3.6 (patched version) - No React Flight packages in use - React and React DOM dependencies are managed by Next.js and are at compatible versions ### Verification Confirmed the following: 1. Next.js is at version 15.3.6 (the patched version for 15.3.x releases) 2. No vulnerable React Flight packages (react-server-dom-*) are present in dependencies 3. React 19.0.0 is compatible with Next.js 15.3.6 4. No manual React updates needed (Next.js manages React versions automatically) ### Conclusion This project requires no modifications to address the React Flight / Next.js RCE advisory. It is already running patched software versions. Co-authored-by: Vercel <vercel[bot]@users.noreply.github.com>
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rafaelcr
approved these changes
Dec 8, 2025
ryanwaits
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Dec 8, 2025
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This is an automatic PR generated by Vercel to help you with patching efforts. We can't guarantee it's comprehensive, and it may contain mistakes. Please review our guidance before merging these changes.
A critical remote code execution (RCE) vulnerability in React Server Components, impacting frameworks such as Next.js, was identified in the project hiro-systems-docs. The vulnerability enables unauthenticated RCE on the server via insecure deserialization in the React Flight protocol.
This issue is tracked under:
GitHub Security Advisory: GHSA-9qr9-h5gf-34mp
React Advisory: CVE-2025-55182
Next.js Advisory: CVE-2025-66478
This automated pull request upgrades the affected React and Next.js packages to patched versions that fully remediate the issue.
More Info | security@vercel.com