The host is installed with Atlassian Jira Server before 7.13.12, 8.0.0 before 8.5.4, 8.6.0 before 8.6.1 and is prone to a broken access control vulnerability. A flaw is present in the application which fails to properly handle issues in the comment properties. Successful exploitation allows remote attackers to make comments on a ticket to which they do not have commenting permissions.