A vulnerability was found in InvoicePlane up to 1.6.1. It has been classified as problematic. This affects the function download of the file invoices.php. The manipulation of the argument invoice leads to path traversal. It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used. Upgrading to version 1.6.2-beta-1 is able to address this issue. It is recommended to upgrade the affected component. The vendor was contacted early, responded in a very professional manner and quickly released a fixed version of the affected product.