CVE-2026-23870

Denial of Service via Crafted HTTP Requests in Meta’s React Server DOM Packages

Published May 6, 2026 CVSS 3.1 · 7.5 High EPSS 1.5% 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 server crashes, out-of-memory exceptions or excessive CPU usage; affecting the following packages: react-server-dom-webpack, react-server-dom-parcel, react-server-dom-turbopack (versions 19.0.0 through 19.0.5, 19.1.0 through 19.1.6, and 19.2.0 through 19.2.5).

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Github GHSA Github GHSA GHSA-rv78-f8rc-xrxh Facebook React has a Denial of Service Vulnerability in React Server Components
History
Type Values Removed Values Added
CPEs cpe:2.3:a:facebook:react-server-dom-parcel:*:*:*:*:*:node.js:*:*
cpe:2.3:a:facebook:react-server-dom-turbopack:*:*:*:*:*:node.js:*:*
cpe:2.3:a:facebook:react-server-dom-webpack:*:*:*:*:*:node.js:*:*
Type Values Removed Values Added
Title Denial of Service via Crafted HTTP Requests in Meta’s React Server DOM Packages
Weaknesses CWE-400
Type Values Removed Values Added
Title Denial of Service via Crafted HTTP Requests in Meta React Server DOM Packages
Weaknesses CWE-770
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
Metrics ssvc

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

Type Values Removed Values Added
Title Denial of Service via Crafted HTTP Requests in Meta React Server DOM Packages
Weaknesses CWE-770
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 server crashes, out-of-memory exceptions or excessive CPU usage; affecting the following packages: react-server-dom-webpack, react-server-dom-parcel, react-server-dom-turbopack (versions 19.0.0 through 19.0.5, 19.1.0 through 19.1.6, and 19.2.0 through 19.2.5).
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
May 6, 2026, 7:06 PM
Reserved
Jan 16, 2026, 7:49 PM
Status
Analyzed
Published
May 6, 2026, 5:16 PM
Modified
Oct 26, 2026, 7:10 PM