CVE-2026-23864
HIGHReact 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: llmDescription
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
Vendor Advisory x_refsource_confirm
https://www.facebook.com/security/advisories/cve-2026-23864
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