HIGH🇵🇱 Wersja polska

CVE-2026-44574

CVSS 8.1v3.1pub. 2026-05-13upd. 2026-07-03

Next.js is a React framework for building full-stack web applications. From 15.4.0 to before 15.5.16 and 16.2.5, applications that rely on middleware to protect dynamic routes can be vulnerable to authorization bypass. In affected deployments, specially crafted query parameters can alter the dynamic route value seen by the page while leaving the visible path unchanged, which can allow protected content to be rendered without passing the expected middleware check. This vulnerability is fixed in 15.5.16 and 16.2.5.

CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
  • Vercel Next.js

    APP
    Vercel
    15.4.0 – 15.5.16 (bez)16.0.0 – 16.2.5 (bez)
🔵
CHECK WITH VENDOR
No clear patch data available. Check vendor references.
CWE
References

Related vulnerabilities

CVE-2025-55182CRITICAL10.0⚠ KEVPL ✓ten sam produkt

RCE bez uwierzytelnienia w React Server Components (deserializacja)

CVE-2025-29927CRITICAL9.1PL ✓ten sam produkt

Pominięcie autoryzacji w middleware Next.js przez nagłówek x-middleware-subrequest

CVE-2026-44573HIGH7.5ten sam produkt

Next.js is a React framework for building full-stack web applications. From 12.2.0 to before 15.5.16 and 16.2....

CVE-2026-44575HIGH7.5ten sam produkt

Next.js is a React framework for building full-stack web applications. From 15.2.0 to before 15.5.16 and 16.2....

CVE-2026-44578HIGH8.6ten sam produkt

Next.js is a React framework for building full-stack web applications. From 13.4.13 to before 15.5.16 and 16.2...