Pagure before 5.6 allows XSS via the templates/blame.html blame view.
https://pagure.io/pagure/commits/master
https://docs.pagure.org/pagure/changelog.html
http://lists.opensuse.org/opensuse-security-announce/2020-11/msg00007.html
http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00066.html