Jenkins HTML Publisher Plugin 1.20 and earlier did not escape the project and build display names in the HTML report frame, resulting in a cross-site scripting vulnerability exploitable by users able to change those.
https://jenkins.io/security/advisory/2019-10-01/#SECURITY-1590
https://access.redhat.com/errata/RHSA-2019:4097
https://access.redhat.com/errata/RHSA-2019:4089