CVE-2020-21474: Nucleuscms

Critical severity, CVSS 9.8. EPSS: 1.2% chance of exploitation in the next 30 days.

File Upload vulnerability in NucleusCMS v.3.71 allows a remote attacker to execute arbitrary code via the /nucleus/plugins/skinfiles/?dir=rsd parameter.

Affected products

• Nucleuscms Nucleuscms: version 3.71 only

Published 2023-06-20. Last modified 2026-06-17.