The host is installed with Atlassian Confluence Server before 7.13.15, 7.14.0 before 7.19.7, or 7.20.0 before 8.2.0 and is prone to an information disclosure vulnerability. A flaw is present in the application which fails to properly handle an issue in the macro preview feature. Successful exploitation allows remote attackers to view the names of attachments and labels in a private Confluence space.