CVE-2026-45109 — Next.js: Middleware / Proxy bypass in App Router applications via segment-prefetch routes
Next.js is a React framework for building full-stack web applications. From 15.2.0 to before 15.5.18 and 16.2.6, it was found that the fix addressing CVE-2026-44575 did not appl…
Published: 2026-05-13 · CVSS: 7.5 · CVSS 3.1
Next.js is a React framework for building full-stack web applications. From 15.2.0 to before 15.5.18 and 16.2.6, it was found that the fix addressing CVE-2026-44575 did not apply to middleware.ts with Turbopack. This vulnerability is fixed in 15.5.18 and 16.2.6.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7