CVE-2021-20103: Machform

Medium severity, CVSS 6.1. EPSS: 0.7% chance of exploitation in the next 30 days.

Machform prior to version 16 is vulnerable to stored cross-site scripting due to insufficient sanitization of file attachments uploaded with forms through upload.php.

Affected products

• Machform Machform: before 16 (fixed in 16)

Published 2021-06-29. Last modified 2026-06-17.