CVE WatchJul 15, 2026

CVE-2026-23869

A denial of service vulnerability exists in React Server Components, affecting the following packages: react-server-dom-parcel, react-server

CVSS

7.5

High

EPSS

1.6%

p72

KEV

—

Exploit Today

0-100

Published: Apr 8, 2026 · Last modified: Jul 15, 2026 · CWE-400 · CWE-502 · CWE-770

EPSS · 30d

1.6%EPSS · 30 days1.6%

2026-06-302026-07-16

Technical description

A denial of service vulnerability exists in React Server Components, affecting the following packages: react-server-dom-parcel, react-server-dom-turbopack and react-server-dom-webpack (versions 19.0.0 through 19.0.4, 19.1.0 through 19.1.5, and 19.2.0 through 19.2.4). The vulnerability is triggered by sending specially crafted HTTP requests to Server Function endpoints.The payload of the HTTP request causes excessive CPU usage for up to a minute ending in a thrown error that is catchable.

Official references

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