Security Problem with timeout

I tested the module and while i was on sofortüberweisung.de, logged into my bankaccount and havig gotten a mobile tan, i waited to long so the timeout limit was reach. when i then entered the mobile tan i was transfered back to the ecommerce site but received the following error (which includes our project passwort, I changed it here)

Array ( [transaction] => [user_id] => [project_id] => [sender_holder] => [sender_account_number] => [sender_bank_code] => [sender_bank_name] => [sender_bank_bic] => [sender_iban] => [sender_country_id] => [recipient_holder] => [recipient_account_number] => [recipient_bank_code] => [recipient_bank_name] => [recipient_bank_bic] => [recipient_iban] => [recipient_country_id] => [international_transaction] => [amount] => [currency_id] => [reason_1] => [reason_2] => [security_criteria] => [user_variable_0] => [user_variable_1] => [user_variable_2] => [user_variable_3] => [user_variable_4] => [user_variable_5] => [created] => [project_password] =>abcdefghijklmn123 [verified] => )<

The problem is, that the project passwort is transmitted unencryptioned so any user could by this way get the project passwort of a shop. I believe this is a major security issue.