CVE-2026-119039

MEDIUM
MEDIUM Priority: 0.01 BB Relevance: 71/100
Published: 2026-11-12 Modified: 2026-11-12 First seen: 2026-11-12 Status: active

Attack Surface

Network Low Complexity No Auth No Interaction

CVSS Vector Breakdown

AV: Network
AC: Low
PR: None
UI: None
S: Unchanged
C: Low
I: None
A: None

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.

Weakness Classification (1)

Affected Software (2)

VendorProductVersion
Unknown Defender Security 4.9.0 < 6.4.1
Unknown Defender Security 4.9.0 < 6.4.1

Bug Bounty Relevance

71 / 100
✓ Network accessible
✓ No authentication
✓ Low complexity
✓ No user interaction

CVSS Score

5.3 / 10.0 v3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

EPSS — Exploitation Probability

0.14%
Raw Score 0.001370
Percentile 3.1%
Date 2026-11-12

Intelligence Sources

mitre ref →
nvd ref →