CVE-2026-23869

HIGH EPSS 56.5%

Published Apr 8, 20262mo ago · Modified Jun 17, 20261w ago

7.5 CVSS 3.1

High

Published Apr 8, 2026 2mo ago

Last Modified Jun 17, 2026 1w ago

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.

CVSS Details

Base Score

7.5

Exploitability

3.9

Impact

3.6

Vector string

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector Network

Attack Complexity Low

Privileges Required None

User Interaction None

Scope Unchanged

Confidentiality None

Integrity None

Availability High

Threat Intelligence

EPSS Exploit Probability

56.5% percentile

Exploit & Patch Status

No Known Exploit

No Patch Available

Weaknesses 2

CWE-400 Uncontrolled Resource Consumption Resource Mgmt

CWE-502 Deserialization of Untrusted Data Validation

References 1

github.com https://github.com/facebook/react/security/advisories/GHSA-479c-33wc-g2pg

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.