In Epiphany (aka GNOME Web) through 43.0, untrusted web content can trick users into exfiltrating passwords, because autofill occurs in sandboxed contexts.
https://lists.debian.org/debian-lts-announce/2023/05/msg00015.html
https://gitlab.gnome.org/GNOME/epiphany/-/merge_requests/1275
https://github.com/google/security-research/security/advisories/GHSA-mhhf-w9xw-pp9x