In Redmine before 3.2.8, 3.3.x before 3.3.5, and 3.4.x before 3.4.3, XSS exists in app/helpers/application_helper.rb via a multi-value field with a crafted value that is mishandled during rendering of issue history.
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2017-15568.json"