Impact Score: 5/10
Cal.com v5.1.18 β Release Notes & Engineering Impact
Source available β automated, not human-reviewed
Component: calcom Β· Channel: stable. Automated analysis, not a compatibility certification. How this works.
Analysis updated: 2026-11-01.
β‘ Executive Summary (TL;DR)
Cal.com v5.1.18. Source highlight: revert: "chore: Migration to backfill EventType.userId with B, if null"
Who Does This Impact? (Role-Based Analysis)
π» Software Engineers & Devs
Check the source notes against the package and APIs you use before upgrading.
π Product & Engineering Leads
Use the documented changes to assess relevance to your product; release frequency alone is not a quality measure.
βοΈ DevOps & Security
Verify the target version, runtime requirements and rollback procedure in the official documentation.
β¨ New Features & Capabilities (5)
- revert: "feat: enable 'Overlay Calendar' enabled by default for signeβ¦
- chore: Add id column in CalendarCache
- feat: sticky-shell in event-types
- feat: restrict attributes tab to admin/owners only (CAL-4852)
- feat: Salesforce - on booking cancel, write to event object
π§ Bug Fixes & Patches (6)
- fix: Layout is not being set properly on mobile screens
- fix: weight filter should never return length=0
- fix: use real ip in throttler [v2]
- fix: Incorrect booker URL for individual event types inside the org
- fix(CAL-5435): Conditionally render selection bar buttons based on user role
- fix: A few flakes
π View Raw Release Notes (Original Developer Log)
## What's Changed
* revert: "chore: Migration to backfill EventType.userId with B, if null" by @zomars in https://github.com/calcom/cal.com/pull/20598
* revert: "feat: enable 'Overlay Calendar' enabled by default for signe⦠by @keithwillcode in https://github.com/calcom/cal.com/pull/20600
* chore: Add id column in CalendarCache by @hariombalhara in https://github.com/calcom/cal.com/pull/20578
* fix: Layout is not being set properly on mobile screens by @anikdhabal in https://github.com/calcom/cal.com/pull/20584
* fix: weight filter should never return length=0 by @CarinaWolli in https://github.com/calcom/cal.com/pull/20588
* feat: sticky-shell in event-types by @TusharBhatt1 in https://github.com/calcom/cal.com/pull/20566
* fix: use real ip in throttler [v2] by @ThyMinimalDev in https://github.com/calcom/cal.com/pull/20606
* fix: Incorrect booker URL for individual event types inside the org by @anikdhabal in https://github.com/calcom/cal.com/pull/20602
* feat: restrict attributes tab to admin/owners only (CAL-4852) by @devin-ai-integration in https://github.com/calcom/cal.com/pull/20603
* feat: Salesforce - on booking cancel, write to event object by @joeauyeung in https://github.com/calcom/cal.com/pull/20601
* fix(CAL-5435): Conditionally render selection bar buttons based on user role by @devin-ai-integration in https://github.com/calcom/cal.com/pull/20604
* fix: A few flakes by @anikdhabal in https://github.com/calcom/cal.com/pull/20608
**Full Changelog**: https://github.com/calcom/cal.com/compare/v5.1.17...v5.1.18