Atlassian has released security updates to address a vulnerability affecting Jira Server and Jira Data Center. A remote attacker could exploit this vulnerability to take control of an affected system. The Cybersecurity and Infrastructure Security Agency (CISA) encourages users and administrators to review Atlassian Security Advisory 2019-07-10 and Canadian Centre for Cyber Security Advisory AV19-143 and apply the necessary updates or mitigations. Read the advisory at CISA.