A flaw has been found in yangzongzhuan RuoYi up to 4.8.1. Affected by this vulnerability is an unknown functionality of the file /system/role/authUser/cancelAll of the component Role Handler. Executing manipulation of the argument roleId/userIds can lead to improper authorization. The attack may be performed from remote. The exploit has been published and may be used. The vendor was contacted early about this disclosure but did not respond in any way.