Critical (9.8) in cszcms csz cms. EPSS 1.6% chance of exploitation in the next 30 days.
An arbitrary file upload vulnerability in /admin/upgrade of CSZ CMS v1.3.0 allows attackers to execute arbitrary code via uploading a crafted Zip file.
Severity
CVSS 3.1
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)