CVE-2026-119039
Defender Security 4.9.0 - 6.4.0 - Unauthenticated IP Address Spoofing via Smart IP Detection
The Defender Security WordPress plugin before 6.4.1 does not verify that the client IP address it derives for its firewall and lockout decisions actually originates from a trusted source, trusting a user-supplied value by default, allowing unauthenticated attackers to spoof their IP address and evade IP-based protections such as login lockout and IP banning, impersonate an allowlisted address, and poison the Defender Security WordPress plugin before 6.4.1's activity logs.
Fixes and workarounds
No remediation reported in collected sources.
Missing remediation information is not evidence that no patch exists.
Affected products and versions
| Product | Versions | Authority |
|---|---|---|
| Defender Security Unknown |
≥ 4.9.0; < 6.4.1 (affected, semver)
Other versions: unaffected |
CNA: WPScan |
Version ranges are source assertions. Check the vendor advisory and your installed configuration before determining exposure.
CVSS assessments
No CVSS assessment reported. An unscored record is not a low-severity determination.
Exploit evidence
- https://wpscan.com/vulnerability/58a8fb54-7dc6-4749-9467-6ce19a13f0ed/
exploit · CNA: WPScan
References
- https://wpscan.com/vulnerability/58a8fb54-7dc6-4749-9467-6ce19a13f0ed/CNA: WPScan · exploit, vdb-entry, technical-description
For agents and automation
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