# Next.js v15.1.9 — Release & Upgrade Intelligence
- **Product:** Next.js (https://nextjs.org)
- **Version:** v15.1.9
- **Released:** Dec 03, 2025
- **Impact Score:** 5/10
- **Breaking Changes:** Not verified
- **Canonical Analysis:** https://changelogs.us/nextjs/updates/v15.1.9/

## Executive Summary (TL;DR)
Next.js v15.1.9. Source highlight: Please see CVE-2025-66478 for additional details about this release.

## Upgrade Command
```bash
npm install --save-exact next@15.1.9
```