## Critical RCE Vulnerability in React Server Components Puts Next.js and Framework Deployments at Risk
A critical remote code execution vulnerability has been identified in React Server Components, with documented impact across multiple frameworks including Next.js. Security researchers discovered the flaw within the React Flight protocol, which permits unauthenticated server-side code execution through insecure deserialization. The vulnerability represents a significant attack surface for web applications built on these frameworks.

The issue was initially detected in the project "zippet," hosted on Vercel's platform. Tracked under three separate advisories—GitHub Security Advisory GHSA-9qr9-h5gf-34mp, React Advisory CVE-2025-55182, and Next.js Advisory CVE-2025-66478—the flaw has prompted a coordinated disclosure across the React ecosystem. In response, Vercel generated an automated pull request to assist with patching efforts. However, the company has cautioned that the automated changes may not be comprehensive and could contain errors, urging developers to review the provided guidance before merging.

The vulnerability raises serious risk for production deployments, as successful exploitation could enable attackers to execute arbitrary code on affected servers without authentication. Developers using Next.js or related frameworks built on React Server Components are advised to monitor the official security advisories and apply patches promptly. Given that automated remediation carries inherent limitations, manual security review remains essential before deploying any changes to vulnerable systems.
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- **Source**: GitHub Issues
- **Sector**: The Lab
- **Tags**: RCE vulnerability, React Server Components, Next.js, CVE-2025-55182, insecure deserialization
- **Credibility**: unverified
- **Published**: 2026-05-15 07:48:34
- **ID**: 83365
- **URL**: https://whisperx.ai/en/intel/83365