CVE-2026-23864

HIGH

React Server Components 19.0.0-19.0.3, 19.1.0-19.1.4, 19.2.0-19.2.3 - DoS via Crafted HTTP Requests

Title source: llm
STIX 2.1

Description

Multiple denial of service vulnerabilities exist in React Server Components, affecting the following packages: react-server-dom-parcel, react-server-dom-turbopack, react-server-dom-webpack. The vulnerabilities are triggered by sending specially crafted HTTP requests to Server Function endpoints, and could lead to server crashes, out-of-memory exceptions or excessive CPU usage; depending on the vulnerable code path being exercised, the application configuration and application code. Strongly consider upgrading to the latest package versions to reduce risk and prevent availability issues in applications using React Server Components.

References (1)

Core 1
Core References

Scores

CVSS v3 7.5
EPSS 0.0147
EPSS Percentile 70.3%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable yes
Technical Impact partial

Details

CWE
CWE-400 CWE-502
Status published
Products (4)
facebook/react 19.0.0 - 19.0.4
npm/react-server-dom-parcel 19.0.0 - 19.0.4npm
npm/react-server-dom-turbopack 19.1.0-canary-7130d0c6-20241212 - 19.1.5npm
npm/react-server-dom-webpack 19.2.0-canary-63779030-20250328 - 19.2.4npm
Published Jan 26, 2026
Tracked Since Feb 18, 2026