CVE-2026-23870
High
Description
A denial of service vulnerability could be triggered by sending specially crafted HTTP requests to server function endpoints, this could lead to server crashes, out-of-memory exceptions or excessive CPU usage; affecting the following packages: react-server-dom-webpack, react-server-dom-parcel, react-server-dom-turbopack (versions 19.0.0 through 19.0.5, 19.1.0 through 19.1.6, and 19.2.0 through 19.2.5).
SeverityHigh
CVSS7.5
Exploit probability75. percentile1.5%
ProductFacebook React-server-dom-parcel
PublishedMay 6, 2026
First seenMay 6, 2026
How to fix
Update
- react-server-dom-parcel19.0.6, 19.1.7, 19.2.6 or later
- react-server-dom-turbopack19.0.6, 19.1.7, 19.2.6 or later
- react-server-dom-webpack19.0.6, 19.1.7, 19.2.6 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| facebook react-server-dom-parcel | 19.0.0 ≤ v ≤ 19.0.5, 19.1.0 ≤ v ≤ 19.1.6, 19.2.0 ≤ v ≤ 19.2.5 | — |
| facebook react-server-dom-turbopack | 19.0.0 ≤ v ≤ 19.0.5, 19.1.0 ≤ v ≤ 19.1.6, 19.2.0 ≤ v ≤ 19.2.5 | — |
| facebook react-server-dom-webpack | 19.0.0 ≤ v ≤ 19.0.5, 19.1.0 ≤ v ≤ 19.1.6, 19.2.0 ≤ v ≤ 19.2.5 | — |
| react-server-dom-parcelnpm | 19.0.0 ≤ v < 19.0.6, 19.1.0 ≤ v < 19.1.7, 19.2.0 ≤ v < 19.2.6 | 19.0.6, 19.1.7, 19.2.6 |
| react-server-dom-turbopacknpm | 19.0.0 ≤ v < 19.0.6, 19.1.0 ≤ v < 19.1.7, 19.2.0 ≤ v < 19.2.6 | 19.0.6, 19.1.7, 19.2.6 |
| react-server-dom-webpacknpm | 19.0.0 ≤ v < 19.0.6, 19.1.0 ≤ v < 19.1.7, 19.2.0 ≤ v < 19.2.6 | 19.0.6, 19.1.7, 19.2.6 |
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