Atlassian Jira Unrestricted Upload of File with Dangerous Type Vulnerability - CVE-2019-20897
The avatar upload feature in affected versions of Atlassian Jira Server and Data Center allows remote attackers to achieve Denial of Service via a crafted PNG file. The affected versions are before version 8.5.4 from version 8.6.0 before 8.6.2 and from version 8.7.0 before 8.7.1.