MediumGHSA-f87g-xv8r-7p7xCVE-2026-94485

Next.js has information disclosure in App Router metadata image routes via dynamicParams bypass

Published 7 Oct 2026 · Updated 7 Oct 2026

Affected package

nextnpm
Affected
>=16.0.0 <16.3.8
Fixed in
16.3.8
Update to the fixed version for your release line, for example:npm install next@16.3.8

Details

In Next.js App Router applications built with webpack, metadata image routes such as opengraph-image and twitter-image ignore the dynamicParams route segment option. An attacker can request metadata image URLs for dynamic segments that were deliberately excluded from generateStaticParams().

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References

Advisory data from OSV.dev (opens OSV.dev in a new tab), refreshed daily.