Information exposure in Next.js dev server due to lack of origin verification

中 4.3CVE-2025-48068 · GHSA-3h52-269p-cp9r · 30/05/2025 公開 · 17/06/2026 更新

パッケージ	影響を受けるバージョン	修正済みバージョン
next.js vercel	`≥ 13.0.0, < 14.2.30≥ 15.0.0, < 15.2.2`	`14.2.3015.2.2`
next npm	`≥ 13.0, < 14.2.30≥ 15.0.0, < 15.2.2`	`14.2.3015.2.2`

概要

Summary

A low-severity vulnerability in Next.js has been fixed in version 15.2.2. This issue may have allowed limited source code exposure when the dev server was running with the App Router enabled. The vulnerability only affects local development environments and requires the user to visit a malicious webpage while npm run dev is active.

Because the mitigation is potentially a breaking change for some development setups, to opt-in to the fix, you must configure allowedDevOrigins in your next config after upgrading to a patched version. Learn more.

Learn more: https://vercel.com/changelog/cve-2025-48068

Credit

Thanks to sapphi-red and Radman Siddiki for responsibly disclosing this issue.

NVD の説明

Next.js is a React framework for building full-stack web applications. In versions starting from 13.0 to before 14.2.30 and 15.0.0 to before 15.2.2, Next.js may have allowed limited source code exposure when the dev server was running with the App Router enabled. The vulnerability only affects local development environments and requires the user to visit a malicious webpage while npm run dev is active. This issue has been patched in versions 14.2.30 and 15.2.2.