Version 7.13.4 of the Elastic Stack has been released, addressing a security vulnerability that allowed authenticated users to submit malformed queries to Elasticsearch clusters, potentially exposing sensitive data like documents or login credentials. This patch also resolves issues in Workplace Search related to the Confluence Cloud connector, which had previously failed to download and extract attachment content or sync permissions due to a backwards-incompatible API change by Atlassian. Users are advised to upgrade to this latest version for improved security and functionality, and further details are available in the security advisory and release notes.