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Sitefinity Release Notes

Sitefinity CMS 15.4.8637 (Product Update)

August 26, 2026

What's new

  • Elasticsearch service extensibility points for custom client configuration Developers can now customize or fully replace Elasticsearch client construction - such as adding custom headers, transports, or connection settings - without modifying the base implementation. Learn more...

What's fixed

  • MVC: Events widget designer does not retain the selected "Sort events" value after saving (598966)
  • Email campaigns: When creating a campaign, "Like a webpage" option for the template is shown but Feather module is not installed (596447)
  • Error '500' thrown on any page when requested with referrer header with invalid hostname (598775)
  • Dynamic content: Backend list view search displays child dynamic content items from all parent dynamic content items (599200)
  • Site Sync: Incorrect URL value in 'LinkModel' property after page sync (562492)
  • Media: File upload fails if document contains non-latin characters when ChunkedUpload is enabled (595631)
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