CVE-2021-20101: 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 HTTP host header injection due to improperly validated host headers. This could cause a victim to receive malformed content.

Affected products

• Machform Machform: before 16 (fixed in 16)

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