Sitefinity® CMS 15.4 Update is Here—Built for What's Next

Learn More

generic-page

Sitefinity Release Notes

Sitefinity CMS 15.4.8628 (Product Update)

April 01, 2026

What's new

  • You can now define 'Environment index prefix' that is added to the search index name. (584187)
    Improved efficiency in cloud-scale deployments by enabling one shared search service across environments, while ensuring each environment operates on its own isolated indexes. This feature is supported for both Azure AI Search and Elasticsearch services.
    Learn more...
  • You can now retrieve content based on user permissions in the Agentic RAG connector and all Agentic RAG-based widgets. (576654)
    Sitefinity's native Agentic RAG connector enforces permissions before AI ever answers - it respects your content, your users, and your security. Each question integrated with an AI assistant answer, or with AI Search widgets retrieving data using the Agentic RAG, is filtered through the same user permissions.
    Learn more...

What's fixed

  • PARAG connector: Default template of AI search results widget does not render due to mismatch of the C# version used (585431)
  • PARAG connector: Added contentId as a separate metafield when data is ingested in PARAG (584807)
  • Incorrect calculation in Image widget custom resizing (582575)
  • Navigation: Previously selected menu item remains highlighted - stuck selected state (584860)
  • Bulk assign of backend roles does not assign the BackendUsers role automatically to affected users (583674)
  • Forms: If a form uses custom notification template with at least one form response, all forms in the site fail to be registered as pending for sync (584803)
  • Site Sync: Dynamic links to media included in Content block form widget are broken after site sync (585908)
CTA-banner
Progress Sitefinity

Meaningful engagement, elevated experiences delivered with ease.
Set your sites on Sitefinity.