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    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.

    Published:May 13, 2026
    Last Modified:Aug 13, 2026
    EPS:May 13, 2026
    EPSS Score:0.38872
    CVSS Score:8.6

    Affected Products

    Vendor
    Vercel
    Product
    Next.js

    Exploits

    https://github.com/0xBlackash/CVE-2026-44578https://github.com/dinosn/CVE-2026-44578https://github.com/isaca0315/CVE-2026-44578-next-js-ssrfhttps://github.com/love07oj/nextjs-cve-2026-44578https://github.com/lxxexxbxx/CVE-2026-44578https://github.com/panchocosil/verify-ghsa-c4j6-fc7j-m34rhttps://github.com/tocong282/CVE-2026-44578-PoChttps://github.com/ynsmroztas/nextssrf

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-664 Server Side Request Forgery

    Related CVEs

    CVE-2026-75604 (CVSS 9) — Next.js is a React framework for building full-stack web applications. From 13.4.0 until 15.5.24 and 16.3.3, N…
    CVE-2026-64649 (CVSS 8.3) — Next.js is a React framework for building full-stack web applications. In versions 14.1.1 through 15.5.20 and …
    CVE-2026-64648 (CVSS 6) — Next.js is a React framework for building full-stack web applications. In versions 12.0.0 through 15.5.20 and …
    CVE-2026-64647 (CVSS 6.3) — Next.js is a React framework for building full-stack web applications. In versions 12.0.0 through 15.5.20 and …
    CVE-2026-64646 (CVSS 6.3) — Next.js is a React framework for building full-stack web applications. In versions 13.0.0 through 15.5.20 and …
    CVE-2026-64644 (CVSS 6.3) — Next.js is a React framework for building full-stack web applications. In versions 15.5.0 through 15.5.20 and …
    CVE-2026-64643 (CVSS 6.3) — Next.js is a React framework for building full-stack web applications. In versions 12.0.0 through 15.5.20 and …
    CVE-2026-64642 (CVSS 8.3) — Next.js is a React framework for building full-stack web applications. In versions 16.0.0 through 16.2.10, cra…
    CVE-2026-64641 (CVSS 8.2) — Next.js is a React framework for building full-stack web applications. In versions 13.0.0 through 15.5.20 and …
    CVE-2026-64645 (CVSS 8.3) — Next.js is a React framework for building full-stack web applications. In versions 12.0.0 through 15.5.20 and …

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High