CVE-2023-45384: Knowband Supercheckout

Critical severity, CVSS 9.8. EPSS: 0.6% chance of exploitation in the next 30 days.

KnowBand supercheckout > 5.0.7 and < 6.0.7 is vulnerable to Unrestricted Upload of File with Dangerous Type. In the module "Module One Page Checkout, Social Login & Mailchimp" (supercheckout), a guest can upload files with extensions .php

Affected products

• Knowband Supercheckout: from 5.0.7, before 6.0.7 (fixed in 6.0.7)

Published 2023-10-19. Last modified 2026-06-17.