What's new in Sitefinity 15.4.8626

Sitefinity AI capabilities

Search Engine Optimization Agent

The Search Engine Optimization Agent is now available, leveraging AI to help you ensure that Sitefinity content aligns with SEO best practices. The AI Agent performs autonomous analysis of your text-based content and generates actionable recommendations in-context upon detecting missing or under-optimized content.
Integrated directly into the Sitefinity content editing experience, the Search Engine Optimization Agent works seamlessly with all existing workflows and content fields in Sitefinity backend.

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Content Markup for AI Discoverability

To optimize your Sitefinity content for AI, you can now implement structured data markup (Schema.org compliant) in Sitefinity CMS. This capability enables the use of standardized vocabulary in the page details view for content items, as well as directly within pages. By providing explicit machine-readable data, you clearly define what your content represents, who it is intended for, and how key entities relate to one another. This makes it easier for AI retrieval systems and search engines to accurately interpret and process your website content. More advantages of implementing structured content markup:

• Improved semantic discoverability - Structured data helps AI retrieval systems and search engines better interpret content entities, relationships, and context, supporting stronger SEO and GEO alignment.

• Higher credibility and trust - Explicitly defined authorship, publication details, organizations, and content types may increase credibility signals used by AI systems when selecting sources.

• Future-proof content strategy - Machine-readable data helps ensure your content remains accessible and adaptable to evolving AI-powered discovery systems.

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Native Agentic RAG Connector

The Agentic RAG connector for Sitefinity on-premises deployments is now available as a native Sitefinity CMS module. The new implementation utilizes a unified architecture that is independent of the deployment model used - Cloud or self-hosted. With this Sitefinity product update, customers can establish and manage the Agentic RAG bridge through a streamlined workflow while gaining greater flexibility in how the integration is configured. The native module also introduces expanded capabilities, including more control over content selection and management when connecting Sitefinity to Agentic RAG.

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Agentic RAG based Search Widgets

This Sitefinity product update introduces a suite of AI Search widgets based on native Agentic RAG that deliver conversational, intelligent, and context-aware search experience. These new Search widgets bring the power of Progress Agentic RAG directly into your Sitefinity websites.

• The AI ask box widget allows visitors to input natural-language queries.

• The AI answer widget displays concise and relevant AI-generated answers.

• The AI search results widget presents reference sources as part of AI-generated answers.

Together, the AI Search widgets create an engaging, dynamic search experience that improves content discoverability and user satisfaction, and are seamlessly integrated with the Agentic RAG connector.

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Third-party libraries updates

• Progress.Sitefinity.Centaur.All - 2025.4.1321.462

• Progress.Sitefinity.Web.UI - 2025.4.1321.462

• ServiceStack - 10.0.4

• AWSSDK.Core - 4.0.3.8

• AWSSDK.DynamoDBv2 - 4.0.10.7

• AWSSDK.SQS - 4.0.2.11

• AWSSDK.S3 - 4.0.17.1

• Newtonsoft.Json - 13.0.4

• System.IdentityModel.Tokens.Jwt - 8.15.0

• Microsoft.IdentityModel.JsonWebTokens - 8.15.0

• Microsoft.IdentityModel.Logging - 8.15.0

• Microsoft.IdentityModel.Protocols - 8.15.0

• Microsoft.IdentityModel.Protocols.OpenIdConnect - 8.15.0

• Microsoft.IdentityModel.Protocols.WsFederation - 8.15.0

• Microsoft.IdentityModel.Tokens - 8.15.0

• Microsoft.IdentityModel.Tokens.Saml - 8.15.0

• Microsoft.IdentityModel.Xml - 8.15.0

• Azure.Core - 1.50.0

• Microsoft.Extensions.DependencyInjection - 10.0.2

• HtmlSanitizer - 9.0.892

• System.Text.Json - 10.0.2

• System.Memory.Data - 10.0.2

• System.Collections.Immutable - 10.0.2

• System.Text.Encoding.CodePages - 10.0.2

• Microsoft.Extensions.Logging - 10.0.2

• Microsoft.Extensions.Primitives - 10.0.2

The deprecated Azure Storage libraries have been migrated to:

• Azure.Storage.Blobs - 12.27.0

• Azure.Storage.Common - 12.26.0

The following deprecated or obsolete dependencies have been removed:

• Microsoft.IdentityModel.Protocol.Extensions

• Microsoft.Azure.KeyVault.Core

• Microsoft.Rest.ClientRuntime

• WindowsAzure.Storage

• Sitefinity.Windows.Azure

The following library is replaced due to discontinued support or features:

• html2canvas is replaced with html2canvas-pro - 1.6.6

What's fixed

• Dynamic Modules: Setting permissions per field, when LDAP is configured, causes Sitefinity to become unresponsive (578807)

• List items cannot have a title that ends with period (581485)

• Mailchimp connector: Cannot disconnect forms from Mailchimp forms (581278)

• Rich-Text Editor loses image link URL upon editing (567945)

• Custom font added for the Dirham symbol (580956)

• Dashboard does not load or work when used in sub-application mode (3rd or 4th level) (581703)

• Media/Documents: The approval workflow is skipped in some cases (578293)

• Sitefinity AI Assistant: Accessibility frontend improvements (579722)

• Sitefinity AI Assistant: Frontend texts are localized to the current site language in SAIA, including date (579588)

• Sitefinity AI Assistant: Fixed issue with special characters in file name, preventing the use of images for customizing SAIA frontend (582558)

• Pages: Child pages are not indented correctly when the parent page is expanded (582697)

Known issues

• Progress Agentic RAG Connector: Permissions filtering based on the current user is not supported at this time. The initial data push will not include items with restrictive permissions (not accessible for everyone). Changing items with permissions will not push them to the Agentic RAG connector. If an item is pushed to the Agentic RAG connector and you want to restrict it at a later point in time, make sure to re-publish it, so the item is removed from the Agentic RAG connector. Also, if a permission is changed on a global level (for a parent item or content type), you need to re-publish all affected items or re-send this content to Agentic RAG connector to get the items updated.