## 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, posing a direct threat to 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 is not a theoretical risk; the vulnerability was actively discovered in a live project, underscoring its immediate exploitability. The security community has formally tracked the issue under advisories from GitHub, React, and Next.js, confirming its severity and broad impact.

The vulnerability, designated CVE-2025-55182 for React and CVE-2025-66478 for Next.js, allows for server-side compromise through the manipulation of serialized data. This type of flaw is particularly dangerous as it can be triggered remotely without requiring user authentication, potentially granting attackers full control over affected application servers. The discovery within the `store-it` project serves as a concrete proof-of-concept, highlighting how widespread deployments could be at risk. Automated patching efforts, like the pull request generated by Vercel, are now underway, but they require manual review and validation to ensure completeness.

The exposure places immense pressure on development teams using React Server Components to urgently review and apply security patches. Given the central role of Next.js and React in modern web development, the potential fallout is significant, affecting countless production applications. While automated tools provide a starting point, the guidance explicitly warns that they may contain mistakes and are not comprehensive. This incident triggers a critical security audit cycle for organizations, forcing them to scrutinize their dependencies and deployment pipelines to mitigate the risk of a widespread server compromise.
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- **Source**: GitHub Issues
- **Sector**: The Lab
- **Tags**: cybersecurity, vulnerability, react, nextjs, web-development
- **Credibility**: unverified
- **Published**: 2026-03-25 14:27:44
- **ID**: 33495
- **URL**: https://whisperx.ai/en/intel/33495