Next.js is a React framework for building full-stack web applications. From 13.4.13 to before 15.5.16 and 16.2.5, self-hosted applications using the built-in Node.js server can be vulnerable to server-side request forgery through crafted WebSocket upgrade requests. An attacker can cause the server to proxy requests to arbitrary internal or external destinations, which may expose internal services or cloud metadata endpoints. Vercel-hosted deployments are not affected. This vulnerability is fixed in 15.5.16 and 16.2.5.
References
| Link | Resource |
|---|---|
| https://github.com/vercel/next.js/security/advisories/GHSA-c4j6-fc7j-m34r | Mitigation Vendor Advisory |
Configurations
Configuration 1 (hide)
|
History
14 May 2026, 18:34
| Type | Values Removed | Values Added |
|---|---|---|
| First Time |
Vercel next.js
Vercel |
|
| CPE | cpe:2.3:a:vercel:next.js:*:*:*:*:*:node.js:*:* | |
| References | () https://github.com/vercel/next.js/security/advisories/GHSA-c4j6-fc7j-m34r - Mitigation, Vendor Advisory |
13 May 2026, 18:17
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2026-05-13 18:16
Updated : 2026-05-14 18:34
NVD link : CVE-2026-44578
Mitre link : CVE-2026-44578
CVE.ORG link : CVE-2026-44578
JSON object : View
Products Affected
vercel
- next.js
CWE
CWE-918
Server-Side Request Forgery (SSRF)