The Biteship: Plugin Ongkos Kirim Kurir Instant, Reguler, Kargo WordPress plugin before 2.2.25 does not sanitise and escape the biteship_error and biteship_message parameters before outputting them back in the page, leading to a Reflected Cross-Site Scripting which could be used against high privilege users such as admin
https://wpscan.com/vulnerability/dfe5001f-31b9-4de2-a240-f7f5a992ac49/