CVE-2020-20979

9.8 criticalEPSS 1.6%

Critical (9.8) in 8cms ljcms. 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.

Severity

9.8 critical

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS: 1.6% chance of exploitation in the next 30 days; higher than 75% of CVEs (scores of 2026-10-31)
CWE: CWE-434
Published: 2021-08-12
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19