CVE-2018-17136: Zzcms

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

zzcms 8.3 contains a SQL Injection vulnerability in /user/check.php via a Client-Ip HTTP header.

Affected products

• Zzcms Zzcms: version 8.3 only

Published 2018-09-17. Last modified 2026-06-17.