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CVE-2026-45109 Next.js: Middleware / Proxy bypass in App Router applications via segment-prefetch routes

🗓️ 13 May 2026 17:11:07Reported by GitHub_MType 
cvelist
 cvelist
🔗 www.cve.org👁 26 Views

Next.js middleware bypass in App Router via segment-prefetch routes; fix applied in version 15.5.18 and 16.2.6.

Related
Affected
Refs
[
  {
    "vendor": "vercel",
    "product": "next.js",
    "versions": [
      {
        "version": ">= 15.2.0, < 15.5.17",
        "status": "affected"
      },
      {
        "version": ">= 16.0.0, < 16.2.6",
        "status": "affected"
      }
    ]
  }
]

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