CVE-2020-35729: Klogserver Klog Server

Critical severity, CVSS 9.8. EPSS: 88.1% chance of exploitation in the next 30 days.

KLog Server 2.4.1 allows OS command injection via shell metacharacters in the actions/authenticate.php user parameter.

Affected products

• Klogserver Klog Server: version 2.4.1 only

Published 2020-12-27. Last modified 2026-06-17.