CVE-2026-23864 describes multiple denial of service vulnerabilities in React Server Components, specifically impacting react-server-dom-parcel, react-server-dom-turbopack, and react-server-dom-webpack. These vulnerabilities, rated High with a CVSS score of 7.5, can be triggered by unauthenticated, specially crafted HTTP requests, leading to server crashes, out-of-memory errors, or high CPU usage. While there is no evidence of active exploitation or public exploit code, the vulnerability has garnered some community discussion and media coverage, indicating awareness. Organizations using affected React Server Components should prioritize upgrading to the latest versions to mitigate this availability risk.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
>= 19.0.0, < 19.0.4CPE matchmatch criteria | cpe:2.3:a:facebook:react:*:*:*:*:*:*:*:* | ||
>= 19.1.0, < 19.1.5CPE matchmatch criteria | cpe:2.3:a:facebook:react:*:*:*:*:*:*:*:* | ||
>= 19.2.0, < 19.2.4CPE matchmatch criteria | cpe:2.3:a:facebook:react:*:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.
The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.