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CVE-2026-23869

Quick assessment

Affected
Meta react-server-dom-turbopack
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

React是Meta开源的一个用于构建用户界面的JavaScript库。 React存在安全漏洞，该漏洞源于处理特制HTTP请求时CPU使用率过高，可能导致拒绝服务。以下版本受到影响：react-server-dom-parcel 19.0.4及之前版本、19.1.5及之前版本和19.2.4及之前版本，react-server-dom-turbopack 19.0.4及之前版本、19.1.5及之前版本和19.2.4及之前版本，react-server-dom-webpack 19.0.4及之前版本、19.

CVSS 7.5 · High EPSS 1.55% · P74

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service

Affected Version Matrix 9

VendorProduct Version RangeStatus
Meta react-server-dom-parcel 19.0.0≤ 19.0.4 affected
19.1.0≤ 19.1.5 affected
19.2.0≤ 19.2.4 affected
Meta react-server-dom-turbopack 19.0.0≤ 19.0.4 affected
19.1.0≤ 19.1.5 affected
19.2.0≤ 19.2.4 affected
Meta react-server-dom-webpack 19.0.0≤ 19.0.4 affected
19.1.0≤ 19.1.5 affected
19.2.0≤ 19.2.4 affected
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I. Basic Information for CVE-2026-23869

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
React 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
React是Meta开源的一个用于构建用户界面的JavaScript库。 React存在安全漏洞，该漏洞源于处理特制HTTP请求时CPU使用率过高，可能导致拒绝服务。以下版本受到影响：react-server-dom-parcel 19.0.4及之前版本、19.1.5及之前版本和19.2.4及之前版本，react-server-dom-turbopack 19.0.4及之前版本、19.1.5及之前版本和19.2.4及之前版本，react-server-dom-webpack 19.0.4及之前版本、19.
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Meta react-server-dom-turbopack 19.0.0 ~ 19.0.4 -
Meta react-server-dom-parcel 19.0.0 ~ 19.0.4 -
Meta react-server-dom-webpack 19.0.0 ~ 19.0.4 -

II. Public POCs for CVE-2026-23869

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III. Intelligence Information for CVE-2026-23869

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IV. Related Vulnerabilities

Same product: react-server-dom-turbopack
Same vendor: Meta

V. Comments for CVE-2026-23869

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