The host is installed with Atlassian Confluence Server 4.x before 7.19.17, 8.4.0 before 8.4.5, 8.5.0 before 8.5.4 and is prone to a template injection vulnerability. A flaw is present in the application which fails to properly handle unspecified vectors. Successful exploitation allows an unauthenticated attacker to inject unsafe user input into a Confluence page.