GHSA-8h8q-6873-q5fj
Next.js Vulnerable to Denial of Service with Server Components
At a glance
- Published
- Updated
- CVSS_V3
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Description
A vulnerability affects certain React Server Components packages for versions 19.x and frameworks that use the affected packages, including Next.js 13.x, 14.x, 15.x, and 16.x using the App Router. The issue is tracked upstream as [CVE-2026-23870](https://github.com/facebook/react/security/advisories/GHSA-rv78-f8rc-xrxh). A specially crafted HTTP request can be sent to any App Router Server Function endpoint that, when deserialized, may trigger excessive CPU usage. This can result in denial of service in unpatched environments.
Affected packages
| Package | Versions |
|---|---|
| npm · next | introduced 13.0.0, fixed 15.5.16 |
| npm · next | introduced 16.0.0, fixed 16.2.5 |
References
- https://github.com/facebook/react/security/advisories/GHSA-rv78-f8rc-xrxh WEB
- https://github.com/vercel/next.js/security/advisories/GHSA-8h8q-6873-q5fj WEB
- https://github.com/vitejs/vite-plugin-react/security/advisories/GHSA-w94c-4vhp-22gx WEB
- https://nvd.nist.gov/vuln/detail/CVE-2026-23870 ADVISORY
- https://github.com/vercel/next.js PACKAGE
Sources
| Source | Licence |
|---|---|
| OSV.dev | CC-BY 4.0 — GitHub Advisory Database |