# Cal.com v5.2.3 — Release & Upgrade Intelligence
- **Product:** Cal.com (https://cal.com)
- **Version:** v5.2.3
- **Released:** Apr 21, 2025
- **Impact Score:** 5/10
- **Breaking Changes:** Not verified
- **Canonical Analysis:** https://changelogs.us/calcom/updates/v5.2.3/

## Executive Summary (TL;DR)
Cal.com v5.2.3. Source highlight: perf: slim down middleware matcher

## New Features
- feat: Write UTM params to Salesforce
- chore: Add consent message when SMS workflows are related
- feat: make skeleton for booking embed accurate
- chore: Add layout.tsx to Foundation team CODEOWNERS

## Improvements
- perf: slim down middleware matcher
- chore: improved warning for UNKEY_ROOT_KEY

## Bug Fixes
- fix: offer seats feature is broken
- fix: Remove trailing } from utm param
- fix: only managed users assignable to managed team event
- fix: calendar connect atoms
- fix: header overlaps in month view on short viewport
- fix: 404 for embed.js in single domain-single org self hosting setup