# Medusa v2.12.1 — Release & Upgrade Intelligence
- **Product:** Medusa (https://medusajs.com)
- **Version:** v2.12.1
- **Released:** Dec 03, 2025
- **Impact Score:** 5/10
- **Breaking Changes:** Not verified
- **Canonical Analysis:** https://changelogs.us/medusajs/updates/v2.12.1/

## Executive Summary (TL;DR)
Medusa v2.12.1. Source highlight: This release fixes a regression in the events system introduced in https://github.com/medusajs/medusa/pull/14084. That PR added an optimization to emit events only when at least one subscriber is registered for the event.

## Improvements
- docs: improve CORS troubleshooting guide

## Bug Fixes
- fix(order): Add composite unique index on order_item version:item_id
- fix(): event emitting
- chore: fixes to TSDocs