CVE-2022-4100: Wpcerber Cerber Security Antispam & Malware Scan

Medium severity, CVSS 5.3. EPSS: 0.3% chance of exploitation in the next 30 days.

The WP Cerber Security plugin for WordPress is vulnerable to IP Protection bypass in versions up to, and including 9.4 due to the plugin improperly checking for a visitor's IP address. This makes it possible for an attacker whose IP address has been blocked to bypass this control by setting the X-Forwarded-For: HTTP header to an IP Address that hasn't been blocked.

Affected products

• Wpcerber Cerber Security Antispam & Malware Scan: before 9.5 (fixed in 9.5)

Published 2024-08-31. Last modified 2026-06-17.