The Jira Importers Plugin in Atlassian Jira Server and Data Cente from version with 7.0.10 before 7.6.16, from 7.7.0 before 7.13.8, from 8.0.0 before 8.1.3, from 8.2.0 before 8.2.5, from 8.3.0 before 8.3.4 and from 8.4.0 before 8.4.1 allows remote attackers with Administrator permissions to gain remote code execution via a template injection vulnerability through the use of a crafted PUT request.
Affected versions of Atlassian Jira Server and Data Center allow remote attackers to impact the application's availability via a Denial of Service (DoS) vulnerability on the UserPickerBrowser.jspa page. The affected versions are before version 7.13.9, and from version 8.0.0 before 8.4.2.