## Critical RCE Vulnerability Found in React Server Components Affecting Next.js Deployments
A critical remote code execution vulnerability has been identified in React Server Components, exposing Next.js and other affected frameworks to unauthenticated server-side attacks. Tracked under CVE-2025-55182 and CVE-2025-66478, the flaw resides in insecure deserialization within the React Flight protocol, enabling threat actors to execute arbitrary code on vulnerable servers without authentication.

The vulnerability affects projects leveraging React Server Components, with Next.js deployments being particularly impacted. Security advisories have been published across multiple platforms, including GitHub Security Advisory GHSA-9qr9-h5gf-34mp, the official React advisory blog, and Next.js security channels. An automated pull request has been generated by Vercel to assist developers with patching efforts, though officials caution that the automated fix may not be comprehensive and recommend manual review before merging any changes into production environments.

Developers utilizing affected frameworks are urged to immediately assess their deployments, review the linked security advisories, and apply patches as they become available. The Vercel-generated PR serves as an initial remediation step, but the complexity of the underlying deserialization flaw suggests that thorough security auditing remains essential. Organizations running React Server Components in production should treat this as a high-priority patching operation given the potential for unauthenticated remote exploitation.
---
- **Source**: GitHub Issues
- **Sector**: The Lab
- **Tags**: rce, cve-2025-55182, cve-2025-66478, react, next.js
- **Credibility**: unverified
- **Published**: 2026-05-14 23:48:36
- **ID**: 83236
- **URL**: https://whisperx.ai/en/intel/83236