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.
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Affected Vendors & Products
Advisories
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Fixes
Solution
No solution given by the vendor.
Workaround
No workaround given by the vendor.
References
History
Thu, 12 Nov 2026 06:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | 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. | |
| Title | Defender Security 4.9.0 - 6.4.0 - Unauthenticated IP Address Spoofing via Smart IP Detection | |
| References |
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Projects
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Status: PUBLISHED
Assigner: WPScan
Published:
Updated: 2026-11-12T06:00:07.223Z
Reserved: 2026-10-29T11:41:45.920Z
Link: CVE-2026-119039
No data.
Status : Received
Published: 2026-11-12T06:17:12.143
Modified: 2026-11-12T06:17:12.143
Link: CVE-2026-119039
No data.
OpenCVE Enrichment
No data.
Weaknesses
No weakness.