Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.
Fixed in 3.6.6 by https://gitlab.gnome.org/GNOME/libsoup/-/commit/6dfe506618d2d5856618e5c0f85bd93386dc8012 as a cherry-pick of a merge request for the https://gitlab.gnome.org/GNOME/libsoup/-/issues/488