---
id: CVE-2026-44578
title: Next.js is a React framework for building full-stack web applications
summary: >-
  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…
severity: high
cvss: 8.6
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N'
cwe:
  - CWE-918
  - CWE-918
vendor: vercel
product: next.js
affected:
  - 'next.js >= 13.4.13, < 15.5.16'
  - 'next.js >= 16.0.0, < 16.2.5'
patched:
  - next.js 16.2.5
published: '2026-05-13'
updated: '2026-07-03'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-44578'
references:
  - url: 'https://github.com/vercel/next.js/security/advisories/GHSA-c4j6-fc7j-m34r'
    label: security-advisories@github.com
  - url: 'https://access.redhat.com/errata/RHSA-2026:34608'
    label: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
  - url: 'https://access.redhat.com/security/cve/CVE-2026-44578'
    label: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2477187'
    label: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-44578.json
    label: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
tags:
  - nvd
  - exploit-available
epss: 0.38872
epssPercentile: 0.98524
ingestedAt: '2026-07-03T14:03:37.058Z'
exploits:
  github: 8
  githubRepos:
    - 'https://github.com/ynsmroztas/nextssrf'
    - 'https://github.com/dinosn/CVE-2026-44578'
    - 'https://github.com/love07oj/nextjs-cve-2026-44578'
  nuclei:
    - javascript/cves/2026/CVE-2026-44578
  checkedAt: '2026-09-24T07:53:03.860Z'
exploitAvailable: true
---

## Overview

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.

## Affected

- `next.js >= 13.4.13, < 15.5.16`
- `next.js >= 16.0.0, < 16.2.5`

## Remediation

Upgrade past the affected range:

- `next.js 16.2.5`