High severity7.5GHSA Advisory· Published May 6, 2026· Updated May 7, 2026
CVE-2026-23870
CVE-2026-23870
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).
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
react-server-dom-parcelnpm | >= 19.0.0, < 19.0.6 | 19.0.6 |
react-server-dom-turbopacknpm | >= 19.0.0, < 19.0.6 | 19.0.6 |
react-server-dom-webpacknpm | >= 19.0.0, < 19.0.6 | 19.0.6 |
react-server-dom-parcelnpm | >= 19.1.0, < 19.1.7 | 19.1.7 |
react-server-dom-turbopacknpm | >= 19.1.0, < 19.1.7 | 19.1.7 |
react-server-dom-webpacknpm | >= 19.1.0, < 19.1.7 | 19.1.7 |
react-server-dom-parcelnpm | >= 19.2.0, < 19.2.6 | 19.2.6 |
react-server-dom-turbopacknpm | >= 19.2.0, < 19.2.6 | 19.2.6 |
react-server-dom-webpacknpm | >= 19.2.0, < 19.2.6 | 19.2.6 |
Affected products
4- ghsa-coords3 versions
>= 19.0.0, < 19.0.6+ 2 more
- (no CPE)range: >= 19.0.0, < 19.0.6
- (no CPE)range: >= 19.0.0, < 19.0.6
- (no CPE)range: >= 19.0.0, < 19.0.6
Patches
Vulnerability mechanics
References
5- github.com/advisories/GHSA-rv78-f8rc-xrxhghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2026-23870ghsaADVISORY
- github.com/facebook/react/security/advisories/GHSA-rv78-f8rc-xrxhnvdWEB
- github.com/vercel/next.js/security/advisories/GHSA-8h8q-6873-q5fjghsaWEB
- github.com/vitejs/vite-plugin-react/security/advisories/GHSA-w94c-4vhp-22gxghsaWEB
News mentions
1- ⚡ Weekly Recap: Linux Rootkit, macOS Crypto Stealer, WebSocket Skimmers and MoreThe Hacker News · May 11, 2026