## Critical RCE Vulnerability in React Server Components Exposes Next.js, Vercel Issues Automated Patch
A critical remote code execution (RCE) vulnerability has been identified within React Server Components, directly impacting major frameworks like Next.js. The flaw, stemming from insecure deserialization in the React Flight protocol, enables unauthenticated attackers to execute arbitrary code on the server. This high-severity security gap was discovered in the project 'rafa-resumos' and poses a significant threat to any application using the affected React Server Components architecture.

The vulnerability is formally tracked under multiple advisories: GitHub Security Advisory GHSA-9qr9-h5gf-34mp, React's CVE-2025-55182, and Next.js's CVE-2025-66478. In response, Vercel has initiated automated patching efforts, generating pull requests for affected projects. However, the company explicitly warns that these automated fixes may not be comprehensive and could contain mistakes, urging developers to conduct thorough reviews before merging changes.

The discovery places immense pressure on development teams using Next.js and React Server Components to immediately assess their exposure and apply the necessary patches. The nature of the flaw—server-side RCE via deserialization—means successful exploitation could lead to complete system compromise. This incident triggers urgent scrutiny of the security posture surrounding modern React architectures and highlights the risks of automated security remediation without rigorous manual validation.
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- **Source**: GitHub Issues
- **Sector**: The Lab
- **Tags**: React, Next.js, Security Vulnerability, Remote Code Execution, CVE
- **Credibility**: unverified
- **Published**: 2026-03-29 02:26:59
- **ID**: 39453
- **URL**: https://whisperx.ai/en/intel/39453