IBOS OA Delete Category del sql injection

A vulnerability was found in IBOS OA 4.5.5 and classified as critical. This issue affects some unknown processing of the file ?r=article/category/del of the component Delete Category Handler. The manipulation leads to sql injection. The attack may be initiated remotely. The exploit has been disclosed to the public and may be used. The associated identifier of this vulnerability is VDB-235067. NOTE: The vendor was contacted early about this disclosure but did not respond in any way.