# CVE-2026-23870 React Server Components DoS: Next.js App Router Patch Guide

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## Article Metadata
- Title: CVE-2026-23870 React Server Components DoS: Next.js App Router Patch Guide
- Summary: CVE-2026-23870 is a high-severity React Server Components DoS flaw affecting Next.js App Router Server Function endpoints. Learn affected versions, safe validation steps and patch guidance.
- Published: May 17, 2026, 9:52 AM EDT
- Updated: May 17, 2026, 1:58 PM EDT
- Category: Exploits
- Primary topic: Web Framework Security
- Authors: Samir Haddad
- Read time: 6 min
- Language: en_US
- Publication time zone: America/New_York (U.S. Eastern Time)
- Access: Free to read

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