CVE-2026-44907

Excessive CPU Resource Exhaustion Denial of Service in Meta's React Server DOM Packages

Published Jul 21, 2026 CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed
Description
A denial of service vulnerability could be triggered by sending specially crafted HTTP requests to server function endpoints, this could lead to excessive CPU usage; affecting the following packages: react-server-dom-webpack, react-server-dom-parcel, react-server-dom-turbopack (versions 19.0.0 through 19.0.7, 19.1.0 through 19.1.8, and 19.2.0 through 19.2.7).

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Github GHSA Github GHSA GHSA-wx67-qw84-cm4g react-server-dom: Denial of Service in Server Functions
History
Type Values Removed Values Added
Title Excessive CPU Resource Exhaustion Denial of Service in Meta's React Server DOM Packages
Weaknesses CWE-400
Type Values Removed Values Added
Title Denial of Service via Crafted HTTP Requests Causing CPU Exhaustion in React Server DOM Packages
Weaknesses CWE-400
Type Values Removed Values Added
First Time appeared Facebook
Facebook react-server-dom-parcel
Facebook react-server-dom-turbopack
Facebook react-server-dom-webpack
Vendors & Products Facebook
Facebook react-server-dom-parcel
Facebook react-server-dom-turbopack
Facebook react-server-dom-webpack
Type Values Removed Values Added
Title Denial of Service via Crafted HTTP Requests Causing CPU Exhaustion in React Server DOM Packages
Weaknesses CWE-400
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description A denial of service vulnerability could be triggered by sending specially crafted HTTP requests to server function endpoints, this could lead to excessive CPU usage; affecting the following packages: react-server-dom-webpack, react-server-dom-parcel, react-server-dom-turbopack (versions 19.0.0 through 19.0.7, 19.1.0 through 19.1.8, and 19.2.0 through 19.2.7).
References
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
Meta
Published
Updated
Jul 21, 2026, 5:22 PM
Reserved
May 8, 2026, 2:33 AM
Status
Awaiting Analysis
Published
Jul 21, 2026, 5:17 PM
Modified
Jul 21, 2026, 8:25 PM