# Astro astro@5.17.3 — Release & Upgrade Intelligence
- **Product:** Astro (https://astro.build)
- **Version:** astro@5.17.3
- **Released:** Feb 18, 2026
- **Impact Score:** 5/10
- **Breaking Changes:** Not verified
- **Canonical Analysis:** https://changelogs.us/astro/updates/astro-5.17.3/

## Executive Summary (TL;DR)
Astro astro@5.17.3. Source highlight: Add a default body size limit for server actions to prevent oversized requests from exhausting memory.

## Bug Fixes
- Add a default body size limit for server actions to prevent oversized requests from exhausting memory.
- Respect image allowlists when inferring remote image sizes and reject remote redirects.

## Upgrade Command
```bash
npm install --save-exact astro@5.17.3
```