There has been a moderate vulnerability in security identified in Umbraco CMS 15 affecting Umbraco 15.0.0 - 15.4.1. Security patches are now available for the latest minor of Umbraco 15.
Security patches are automatically released for Umbraco Cloud via the automated patch feature.
More information can be found in the Umbraco Release Notes for Umbraco 15.4.2 and the Umbraco Blog.
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