The host is installed with Atlassian Confluence Server before 7.19.16, 8.0.0 before 8.3.4, 8.4.0 before 8.4.4, 8.5.0 before 8.5.3, or 8.6.0 before 8.6.1 and is prone to an improper authorization vulnerability. A flaw is present in the application which fails to properly handle unspecified vectors. Successful exploitation allows an unauthenticated attacker to cause significant data loss.