CVE-2023-6426: Bigprof Online Invoicing System

Medium severity, CVSS 5.4. EPSS: 0.4% chance of exploitation in the next 30 days.

A vulnerability has been discovered in BigProf Online Invoicing System 2.6, which does not sufficiently encode user-controlled input, resulting in persistent XSS through /invoicing/app/invoices_view.php, in the FirstRecord parameter. Exploitation of this vulnerability could allow an attacking user to store dangerous JavaScript payloads on the system that will be triggered when the page loads.

Affected products

• Bigprof Online Invoicing System: version 2.6 only

Published 2023-11-30. Last modified 2026-06-17.