CVE-2026-45109
Next.js: Middleware / Proxy bypass in App Router applications via segment-prefetch routes
Description
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.
No summary for this CVE yet.
CVSS Vector Breakdown
Exploitability
AV:NAttack VectorNetwork
AC:LAttack ComplexityLow
PR:NPrivileges RequiredNone
UI:NUser InteractionNone
Scope
S:UScopeUnchanged
Impact
C:HConfidentialityHigh
I:NIntegrityNone
A:NAvailabilityNone
Weaknesses
Affected Products
Vercel
commercial·US
and 1 more affected products View all →
Exploitability
Official Patch Available
References
https://github.com/vercel/next.js/security/advisories/GHSA-26hh-7cqf-hhc6
github.com
https://access.redhat.com/security/cve/CVE-2026-45109
access.redhat.com
https://bugzilla.redhat.com/show_bug.cgi?id=2477190
bugzilla.redhat.com
and 1 more references View all →
News mentions
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