Open Redirect vulnerability in Horizon Web Dashboard 19.4.0 thru 20.1.4 via the success_url parameter.
https://lists.debian.org/debian-lts-announce/2023/12/msg00000.html
https://lists.debian.org/debian-lts-announce/2023/11/msg00033.html
https://github.com/openstack/horizon/blob/master/horizon/workflows/views.py#L96-L102