CVE-2022-2939

WP Cerber Security <= 9.0 - User Enumeration Bypass

MEDIUM

5.3

CVSS Score

Published: September 6, 2022 at 05:19 PM UTC

Updated: June 17, 2026 at 04:42 AM UTC

2 products affected across 2 vendorsWp Cerber Security , Anti Spam & Malware ScanWP Cerber Security, Anti-spam & Malware Scan

Using WP Cerber Security, Anti-spam & Malware Scan by gioni?

Get instant alerts when new vulnerabilities affect WP Cerber Security, Anti-spam & Malware Scan - before attackers find them.

Real-time alertsTrack your software stackFree plan available

Start Free Sign In

Severity

MEDIUM5.3

Exploit prediction

EPSS 0.9%

SSVC

No known exploit

Description

The WP Cerber Security plugin for WordPress is vulnerable to security protection bypass in versions up to, and including 9.0, that makes user enumeration possible. This is due to improper validation on the value supplied through the 'author' parameter found in the ~/cerber-load.php file. In vulnerable versions, the plugin only blocks requests if the value supplied is numeric, making it possible for attackers to supply additional non-numeric characters to bypass the protection. The non-numeric characters are stripped and the user requested is displayed. This can be used by unauthenticated attackers to gather information about users that can targeted in further attacks.