GNOME Keyring through 3.28.2 allows local users to retrieve login credentials via a Secret Service API call and the D-Bus interface if the keyring is unlocked, a similar issue to CVE-2008-7320. One perspective is that this occurs because available D-Bus protection mechanisms (involving the busconfig and policy XML elements) are not used. NOTE: the vendor disputes this because, according to the security model, untrusted applications must not be allowed to access the user's session bus socket.
https://www.youtube.com/watch?v=Do4E9ZQaPck
https://gitlab.gnome.org/GNOME/gnome-keyring/-/issues/5#note_1876550
https://github.com/sungjungk/keyring_crack
https://bugzilla.redhat.com/show_bug.cgi?id=1652194#c8
https://bugs.launchpad.net/ubuntu/+source/gnome-keyring/+bug/1780365