A cross-origin issue with iframe elements was addressed with improved tracking of security origins.
Created webkit2gtk3 tracking bugs for this issue:
Affects: fedora-all [bug 1986889]
This issue has been addressed in the following products:
Red Hat Enterprise Linux 8
Via RHSA-2021:4381 https://access.redhat.com/errata/RHSA-2021:4381
This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):