Moole Vulnerability Database

Find real vulnerabilities before they ship

High

CVE-2026-23869

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.

VectorNETWORK

PublishedApr 08, 2026, 20:16

Published Bycve-assign@fb.com

Base Score

Score7.5

Affected Versions

Package (Ecosystem)IntroducedFixedLimit

react-server-dom-parcel(npm)19.0.019.0.5N/A

react-server-dom-parcel(npm)19.1.019.1.6N/A

react-server-dom-parcel(npm)19.2.019.2.5N/A

react-server-dom-turbopack(npm)19.0.019.0.5N/A

react-server-dom-turbopack(npm)19.1.019.1.6N/A

react-server-dom-turbopack(npm)19.2.019.2.5N/A

react-server-dom-webpack(npm)19.0.019.0.5N/A

react-server-dom-webpack(npm)19.1.019.1.6N/A

react-server-dom-webpack(npm)19.2.019.2.5N/A

References

https://github.com/facebook/react/security/advisories/GHSA-479c-33wc-g2pg

Weakness Type

CWE-400

CVSS Metrics

Base Score

7.5

Vector String

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Base SeverityHigh

Version

3.1

Attack Vector (AV)

NETWORK