In Progress MOVEit Transfer 2019.1 before 2019.1.4 and 2019.2 before 2019.2.1, a REST API endpoint failed to adequately sanitize malicious input, which could allow an authenticated attacker to execute arbitrary code in a victim's browser, aka XSS.
https://status.moveitcloud.com/
https://docs.ipswitch.com/MOVEit/Transfer2019_2/ReleaseNotes/en/index.htm#49677.htm
https://docs.ipswitch.com/MOVEit/Transfer2019_1/ReleaseNotes/en/index.htm#49443.htm
https://community.ipswitch.com/s/article/MOVEit-Transfer-Security-Vulnerabilities-Feb-2020