CVE-2026-23864
High · 7.5CVSS
7.5
EPSS
2.6%
Published
Jan 26, 2026
CISA due date
—
The record
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.
Affected packages
| Ecosystem | Package | Introduced | Fixed |
|---|---|---|---|
| npm | react-server-dom-parcel | 19.0.0 | 19.0.4 |
| npm | react-server-dom-parcel | 19.1.0-canary-7130d0c6-20241212 | 19.1.5 |
| npm | react-server-dom-parcel | 19.2.0-canary-63779030-20250328 | 19.2.4 |
| npm | react-server-dom-turbopack | 19.0.0 | 19.0.4 |
| npm | react-server-dom-turbopack | 19.1.0-canary-7130d0c6-20241212 | 19.1.5 |
| npm | react-server-dom-turbopack | 19.2.0-canary-63779030-20250328 | 19.2.4 |
| npm | react-server-dom-webpack | 19.0.0 | 19.0.4 |
| npm | react-server-dom-webpack | 19.1.0-canary-7130d0c6-20241212 | 19.1.5 |
| npm | react-server-dom-webpack | 19.2.0-canary-63779030-20250328 | 19.2.4 |
Related vulnerabilities
- GHSA-83fc-fqcc-2hmg React Server Components have multiple Denial of Service Vulnerabilities Same vulnerability
- GHSA-rv78-f8rc-xrxh Facebook React has a Denial of Service Vulnerability in React Server Components Also affects react-server-dom-parcel
- CVE-2026-23870 A denial of service vulnerability could be triggered by sending specially crafted HTTP… Also affects react-server-dom-parcel
- GHSA-479c-33wc-g2pg React Server Components have a Denial of Service Vulnerability Also affects react-server-dom-parcel
- CVE-2026-23869 A denial of service vulnerability exists in React Server Components, affecting the… Also affects react-server-dom-parcel
- GHSA-7gmr-mq3h-m5h9 Denial of Service Vulnerability in React Server Components Also affects react-server-dom-parcel
- CVE-2025-67779 Denial of Service Vulnerability in React Server Components Also affects react-server-dom-parcel
- GHSA-2m3v-v2m8-q956 Denial of Service Vulnerability in React Server Components Also affects react-server-dom-parcel