Affected versions of Atlassian Confluence Server and Data Center allow anonymous remote attackers to view the names of attachments and labels in a private Confluence space. This occurs via an Information Disclosure vulnerability in the macro preview feature. This vulnerability was reported by Rojan Rijal of the Tinder Security Engineering team. The affected versions are before version 7.13.15, from version 7.14.0 before 7.19.7, and from version 7.20.0 before 8.2.0.