## Critical RCE Vulnerability in React Server Components Tracked as CVE-2025-55182; Next.js Deployments Under Scrutiny
A critical remote code execution vulnerability has been identified in React Server Components, affecting applications built with frameworks including Next.js. The flaw enables unauthenticated RCE on the server through insecure deserialization within the React Flight protocol. The exposure was discovered in the fittmatch-admin project hosted on Vercel, prompting the platform to generate an automated pull request to patch the vulnerability.

The security gap is tracked under multiple official advisories: GitHub Security Advisory GHSA-9qr9-h5gf-34mp, React Advisory CVE-2025-55182, and Next.js Advisory CVE-2025-66478. Vercel has acknowledged the limitations of the automated patch, cautioning that it cannot guarantee comprehensive coverage and urging developers to review additional guidance before merging the proposed changes. The vulnerability specifically leverages the React Flight protocol, which handles server-to-client data streaming in component-based applications.

Security researchers warn that the flaw poses a significant risk to any deployment leveraging React Server Components without proper patching. Organizations running affected Next.js instances should prioritize reviewing the official advisories and applying validated security updates. The presence of an automated remediation attempt from Vercel suggests the platform has identified the exposure across its infrastructure, though manual verification remains essential given the complexity of deserialization vulnerabilities. Developers are advised to audit their implementations against the published CVE details and ensure all Flight protocol data streams are properly validated before deploying updates to production environments.
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- **Source**: GitHub Issues
- **Sector**: The Lab
- **Tags**: react, next.js, rce, cve-2025-55182, vercel
- **Credibility**: unverified
- **Published**: 2026-05-13 17:48:22
- **ID**: 82696
- **URL**: https://whisperx.ai/en/intel/82696