CVE-2021-24223: n5 Upload Form Project n5 Upload Form

Critical severity, CVSS 9.8. EPSS: 2.2% chance of exploitation in the next 30 days.

The N5 Upload Form WordPress plugin through 1.0 suffers from an arbitrary file upload issue in page where a Form from the plugin is embed, as any file can be uploaded. The uploaded filename might be hard to guess as it's generated with md5(uniqid(rand())), however, in the case of misconfigured servers with Directory listing enabled, accessing it is trivial.

Affected products

• n5 Upload Form Project n5 Upload Form: up to and including 1.0

Published 2021-04-12. Last modified 2026-06-17.