The host is installed with Atlassian Confluence Server before 7.19.18 or 7.20.0 before 8.5.5 and is prone to a stored cross site scripting vulnerability. A flaw is present in the application which fails to properly handle an issue in unspecified vectors. Successful exploitation allows an authenticated attacker to execute arbitrary HTML or JavaScript code on a victims browser which has high impact to confidentiality, low impact to integrity, no impact to availability, and requires no user interaction.