Umbraco-CMS v18.1.1 release notes

Viewing: Umbraco-CMS v18.1.1

Released: Tuesday, August 18 2026

Release notes for Umbraco-CMS v18.1.1

Released on: Tuesday, August 18 2026

NuGet Package: Umbraco.Cms v18.1.1

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Upgrade guide

Other 1

#22581 When database migrations are executed as part of an upgrade all pages return a 404 error

type/bug

release/17.6.2

release/18.1.1

by dawoe created on Apr 23, 2026

Fixed in

#23653 Routing: Don't retain the fallback default culture captured during an upgrade boot (closes #22581)