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CVE-2026-44574

1 advisory.

npm/next CVE-2026-44574: high 8.1

Next.js has a Middleware / Proxy bypass through dynamic route parameter injection

Action: Upgrade next to 15.5.16 or later.

npm i next@15.5.16
npm i next@16.2.5

Affected

introducedfixedlast affected
15.4.015.5.16-
16.0.016.2.5-

Fixed versions

15.5.1616.2.5

Sources

CVE-2026-44574 · published · modified · JSON