Fix React Server Components RCE vulnerability#1
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React Flight / Next.js RCE Advisory Mitigation SUMMARY: Applied security patches to address the React Flight / Next.js RCE advisory (CVE-2025-0000) in the peac-x402-receipts-demo monorepo. AFFECTED PACKAGES DETECTED: - ./apps/vercel-next: Uses Next.js 15.5.5 (vulnerable version in 15.5.x range) - ./apps/express-demo: No Next.js dependencies - not affected CHANGES MADE: 1. Updated ./apps/vercel-next/package.json: - Upgraded Next.js from 15.5.5 to 15.5.7 (patched version for 15.5.x) - Upgraded eslint-config-next from 15.5.5 to 15.5.7 (for consistency) - React (19.1.0) and React-DOM (19.1.0) left unchanged as per guidance: Next.js automatically provides patched React versions 2. Updated ./apps/vercel-next/package-lock.json: - Ran `npm install` to resolve 15.5.7 and its dependencies - Lockfile now reflects the patched Next.js version VERIFICATION: ✓ Build verification: `npm run build` completed successfully - shows "Next.js 15.5.7" ✓ Linter check: `npm run lint` passed with no errors ✓ Dependencies: All 346 packages audited and installed correctly FILES MODIFIED: - ./apps/vercel-next/package.json (next: 15.5.5 → 15.5.7, eslint-config-next: 15.5.5 → 15.5.7) - ./apps/vercel-next/package-lock.json (regenerated with 15.5.7) IMPLEMENTATION NOTES: - The project is a monorepo with two applications - Only the Next.js app (apps/vercel-next) was affected by this vulnerability - The Express demo app (apps/express-demo) has no React Flight dependencies - Following the advisory guidance, React versions were not manually bumped as Next.js provides the correct patched versions automatically - No React Flight packages (react-server-dom-webpack, react-server-dom-parcel, react-server-dom-turbopack) are present in this project - Build and linting pass successfully, indicating no breaking changes introduced Co-authored-by: Vercel <vercel[bot]@users.noreply.github.com>
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Important
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 peac-x402-receipts-demo. 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