Umbraco-CMS v17.5.2 release notes

Viewing: Umbraco-CMS v17.5.2

Released: Friday, July 3 2026

Release notes for Umbraco-CMS v17.5.2

Released on: Friday, July 3 2026

NuGet Package: Umbraco.Cms v17.5.2

Quick install instructions This link leads to a site made by members of the Umbraco community, it helps make the installation of Umbraco a lot easier for you.
Upgrade guide

Other 2

#23224 Rich Text Editor blocks lost / hoisted out-of-band after upgrade — legacy data-content-udi markup never migrated to data-content-key

type/bug

release/17.5.2

by robertjf created on Jun 28, 2026

Fixed in

#23259 Rich Text Editor: Migrate inline RTE blocks from data-content-udi to data-content-key (closes #23224)

#22910 Umbraco node name change or first textarea change Umbraco slow loading

type/bug

affected/v17

release/18.1.0

release/17.5.2

by SelwynEdelbroek created on May 20, 2026

Fixed in

#23085 Document & Media Workspace: Limit route generation (closes #22910)