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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.
Use CWE-1385, Vercel vendor hub and Next.Js product page to widen CVE-2025-48068 into its surrounding weakness, vendor, and product context.
Compare it with CVE-2025-55182, CVE-2025-67779 and CVE-2025-55184 for nearby disclosures in the same product family. Additional editorial context is available in Cybersecurity Weekly Roundup: April 27, 2026 — Critical Zero-Days and Framework Failures.