description: Nextcloud Server before 12.0.8 and 13.0.3 suffers from improper checks of dropped permissions for incoming shares allowing a user to still request previews for files it should not have access to.
problem types: Improper Access Control - Generic (CWE-284)
affected:
{
product: Nextcloud Server
vendor: Nextcloud
versions:
status: affected, version: <13.0.3, <12.0.8
}