CVE-2026-44578

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.

CVSS v3 8.6 HIGH

8.6^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 4.0

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope CHANGED

References

Link	Resource
https://github.com/vercel/next.js/security/advisories/GHSA-c4j6-fc7j-m34r	Mitigation Vendor Advisory
https://access.redhat.com/errata/RHSA-2026:34608
https://access.redhat.com/errata/RHSA-2026:37272
https://access.redhat.com/errata/RHSA-2026:40974
https://access.redhat.com/errata/RHSA-2026:54435
https://access.redhat.com/security/cve/CVE-2026-44578
https://bugzilla.redhat.com/show_bug.cgi?id=2477187
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-44578.json

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:vercel:next.js::::::node.js::*
	cpe:2.3:a:vercel:next.js::::::node.js::*

History

No history.

Information

Published : 2026-05-13 18:16

Updated : 2026-08-13 13:19

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)

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