This does not affect Jira Core or Jira Software on instances where Jira Service Desk is not installed. All versions before 3.16.16 are affected by this vulnerability. Atlassian Cloud instances have already been upgraded to a version of Jira which does not have the issue described on this page. This advisory discloses a critical severity security vulnerability in Jira service Desk Server and Jira Services Desk Data Center. Please upgrade to this version to 4.4x before 4.3.0.”]