# Astro astro@5.16.3 — Release & Upgrade Intelligence
- **Product:** Astro (https://astro.build)
- **Version:** astro@5.16.3
- **Released:** Nov 29, 2025
- **Impact Score:** 5/10
- **Breaking Changes:** Not verified
- **Canonical Analysis:** https://changelogs.us/astro/updates/astro-5.16.3/

## Executive Summary (TL;DR)
Astro astro@5.16.3. Source highlight: Fixes actions types when using specific TypeScript configurations

## Bug Fixes
- Fixes actions types when using specific TypeScript configurations
- Fixes authentication bypass via double URL encoding in middleware

## Upgrade Command
```bash
npm install --save-exact astro@5.16.3
```