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You may have already heard about the serious security issue called React2Shell.

Quick summary:

• Attackers can execute code from the client into the server (SSR)
• No authentication required
• Severity level: 10/10 (critical)

This vulnerability comes from:

• Server Side Rendering (SSR)
• in React Server Components (Next.js)

Your project may be affected if it:

• Uses React Server Components
• Has SSR enabled
• OR even installed but SSR is not enabled

THERE IS STILL RISK OF EXPLOITATION

Please review your projects carefully.

If your project uses the above features:

• Update to the latest patched version immediately
• Follow the official security instructions

• Vulnerability report: https://react2shell.com/
• Action required: https://react.dev/blog/2025/12/03/critical-security-vulnerability-in-react-server-components