A malicious website may exfiltrate data cross-origin. A cross- origin issue existed with “iframe” elements. This was addressed with improved tracking of security origins.
https://webkitgtk.org/security/WSA-2024-0005.html
This issue has been addressed in the following products: Red Hat Enterprise Linux 9 Via RHSA-2024:8180 https://access.redhat.com/errata/RHSA-2024:8180