## Critical RCE Vulnerability in React Server Components Exposes Next.js and Other Frameworks
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 represents a severe security breach for any application using the affected technology stack.

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. The issue was discovered in the project 'self-post' and has prompted an automated security patch from Vercel. However, the provided pull request is explicitly labeled as potentially incomplete and may contain mistakes, requiring manual review and additional verification by developers before merging.

The discovery places immediate pressure on development teams using React Server Components to urgently review and apply security patches. The widespread adoption of Next.js and related frameworks means the potential attack surface is significant. While automated fixes are being distributed, the advisory's caveats underscore that comprehensive remediation is not guaranteed, shifting the ultimate security responsibility onto individual project maintainers to conduct thorough assessments.
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- **Source**: GitHub Issues
- **Sector**: The Lab
- **Tags**: React, Next.js, Security Vulnerability, RCE, CVE
- **Credibility**: unverified
- **Published**: 2026-03-31 00:26:55
- **ID**: 42048
- **URL**: https://whisperx.ai/en/intel/42048