CVE-2022-41882

The Nextcloud Desktop Client is a tool to synchronize files from Nextcloud
Server with your computer. In version 3.6.0, if a user received a malicious
file share and has it synced locally or the virtual filesystem enabled and
clicked a nc://open/ link it will open the default editor for the file type
of the shared file, which on Windows can also sometimes mean that a file
depending on the type, e.g. “vbs”, is being executed. It is recommended
that the Nextcloud Desktop client is upgraded to version 3.6.1. As a
workaround, users can block the Nextcloud Desktop client 3.6.0 by setting
the minimum.supported.desktop.version system config to 3.6.1 on the
server, so new files designed to use this attack vector are not downloaded
anymore. Already existing files can still be used. Another workaround would
be to enforce shares to be accepted by setting the
sharing.force_share_accept system config to true on the server, so new
files designed to use this attack vector are not downloaded anymore.
Already existing shares can still be abused.