Release notes for Umbraco-CMS v17.0.1
Released on: Friday, December 5 2025
NuGet Package: Umbraco.Cms v17.0.1
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#21035 Content references: Avoid requesting references for content that is not yet persisted server side
#21020 Delivery API: Missing Member Open API security scheme references
#21018 Segments: Fix processing data for segments variants
#21013 [V17] Upgrade fails with SQL Timeout in MigrateSystemDatesToUtc when migrating umbracoLog table
#21010 Umbraco 17 - Save returns "The given ColumnName 'propertyTypeId' does not match up with any column in data source."
#21006 Rendering: Don't use element cache level on snapshot cache level properties
#21003 Migrations: Optimise `ConvertLocalLinks` migration to process data in pages, to avoid having to load all property data into memory
#21001 Static files: Fix tree to only provide items from expected folders (closes #20962)
#21000 Delivery API - AuthorizationCodeFlow returns 401 on challange
#20997 Media referenced by descendants endpoint returning all ids for non existent uuid
#20977 Deleting document type forever loads
#20976 Property expansion and limiting isn't working properly
#20962 Able to insert file types which should not be allowed as a thumbnail
#20960 Cache: Add awaits to memory cache rebuilds to fix race conditions
#20957 Data breaks on upgrade to 16.4-rc2 from 13.12; same works on 16.1.1