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CVE-2026-45109

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

Description (CNA)

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.

Affected (CNA)

Vendor / productVersions
vercel / next.jsaffected >= 15.2.0, < 15.5.17; affected >= 16.0.0, < 16.2.6

CWE

CWE-288

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.

redhat-SADP

A flaw was found in Next.js. A remote unauthenticated attacker could exploit a bypass in a security fix when using middleware.ts with Turbopack. This vulnerability could lead to the disclosure of sensitive information.