CVE-2020-20979: 8cms Ljcms

Critical severity, CVSS 9.8. EPSS: 1.6% chance of exploitation in the next 30 days.

An arbitrary file upload vulnerability in the move_uploaded_file() function of LJCMS v4.3 allows attackers to execute arbitrary code.

Affected products

• 8cms Ljcms: version 4.3.- only

Published 2021-08-12. Last modified 2026-06-17.