What’s Vulnerable › Vulnerabilities

CVE-2022-4539: Web Application Firewall <= 2.1.2 - IP Address Spoofing to Protection Mechanism Bypass

• Severity: medium (CVSS 5.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.6% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2024-08-31 · updated 2026-06-17
• Weakness: CWE-348

Description

The Web Application Firewall plugin for WordPress is vulnerable to IP Address Spoofing in versions up to, and including, 2.1.2. This is due to insufficient restrictions on where the IP Address information is being retrieved for request logging and login restrictions. Attackers can supply the X-Forwarded-For header with with a different IP Address that will be logged and can be used to bypass settings that may have blocked out an IP address or country from logging in.

Affected products

• cyberlord92 Web Application Firewall – website security: before 2.1.3 — fixed in 2.1.3

How to fix

Upgrade to a fixed version: cyberlord92 Web Application Firewall – website security 2.1.3. Check the vendor advisory for mitigations.

References

• https://plugins.trac.wordpress.org/changeset/3055548/web-application-firewall/trunk/helper/utility.php
• https://www.wordfence.com/threat-intel/vulnerabilities/id/0e99531c-8742-4f91-8525-65bb3cb06644?source=cve

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