This is different from the Wayland security model, as Wayland restricts the ability for clients to modify and read from other clients arbitrarily. This is an extension to a Wayland compositor, and as all extensions do, it contains code which runs on your system. Any code, unless sandboxed, can access your filesystem no matter if it’s run under Wayland, X11, or no windowing system at all for that matter.
This is different from the Wayland security model, as Wayland restricts the ability for clients to modify and read from other clients arbitrarily. This is an extension to a Wayland compositor, and as all extensions do, it contains code which runs on your system. Any code, unless sandboxed, can access your filesystem no matter if it’s run under Wayland, X11, or no windowing system at all for that matter.
It is not related to Wayland or the compositor in any way. This is a plasmashell extension.
Similar caveats do apply to KWin scripts and effects though