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Sitefinity Release Notes

Sitefinity CMS 15.4.8639 (Product Update)

September 29, 2026

What's new

  • Content markup for AI: Schema markup per site
    You can now set schema markup for pages individually for each site. In Pages » Settings » Content markup for AI, you choose whether the template applies to all sites or to the current site only. You can also enable or disable schema markup for an individual site. Learn more...

What's fixed

  • Regression DateField: UtcOffsetMode="Custom" constantly increments/decrements selected date (598733)
  • Accessing /Sitefinity/Login when logged in redirects to login page instead of Dashboard (498234)
  • Forms: Widgets on imported forms cannot be edited by non-admin users with permissions (596920)
  • Pages with many long-text fields take longer to load (597174)
  • Added validation for invalid configuration setting values (601109)
  • External tracking consent type still emits dialog template on layout service (601175)
  • ASP.NET Core Renderer: Navigation widget PageViewModel 'HasChildOpen' property on nodes not set (601063)
  • Frontend-Assembly resources return 'Vary: *', despite being cacheable assets (601179)
  • Cannot ingest non-lifecyle items in Agentic RAG connector (601286)
  • UserProfile URLs generated with empty hash during user creation resulting in duplicate profile URLs (601710)
  • Next.js Renderer: Tracking Consent dialog injection breaks React hydration (600884)
  • Load Balancing: Sitefinity never reconnects to Redis after a transient connection loss (regression of 436238)
  • OData: Error returned when retrieving items with custom provider via REST API (601836)
  • Image upload fails when "Chunk upload" and Image optimization are enabled with Azure Storage provider (593542)
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