B.A.S C2Box before 4.0.0 (r19171) relies on client-side validation, which allows remote attackers to "corrupt the business logic" via a negative value in an overdraft.

An XSS issue was discovered in TreasuryXpress 19191105. Due to the lack of filtering and sanitization of user input, malicious JavaScript can be executed throughout the application. A malicious payload can be injected within the Custom Workflow component and inserted via the Create New Workflow field. As a result, the payload is executed via the navigation bar throughout the application.

An XSS issue was discovered in TreasuryXpress 19191105. Due to the lack of filtering and sanitization of user input, malicious JavaScript can be executed by the application's administrator(s). A malicious payload can be injected within the Multi Approval security component and inserted via the Note field. As a result, the payload is executed by the application's administrator(s).

In TreasuryXpress 19191105, a logged-in user can discover saved credentials, even though the UI hides them. Using functionality within the application and a malicious host, it is possible to force the application to expose saved SSH/SFTP credentials. This can be done by using the application's editor to change the expected SFTP Host IP to a malicious host, and then using the Check Connectivity option. The application then sends these saved credentials to the malicious host.