IP Spoofing Vulnerability in Defender Security WordPress Plugin by WP Defender
CVE-2026-119039
Currently unrated
Key Information:
- Vendor
WordPress
- Status
- Vendor
- CVE Published:
- 12 November 2026
Badges
👾 Exploit Exists🟡 Public PoC
What is CVE-2026-119039?
The Defender Security WordPress plugin prior to version 6.4.1 lacks proper verification of the client IP address used for firewall and lockout decisions. This vulnerability allows unauthenticated attackers to spoof their IP addresses, bypassing crucial IP-based protections like login lockouts and IP bans. Attackers can impersonate whitelisted IP addresses and manipulate the activity logs of the plugin, potentially causing significant security risks and enabling unauthorized access to affected systems.
Affected Version(s)
Defender Security 4.9.0 < 6.4.1
Exploit Proof of Concept (PoC)
PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.