{
 "id": "WPSEC-2026-2785",
 "url": "https://wpsec.com/vuln/WPSEC-2026-2785/",
 "json_url": "https://wpsec.com/vuln/WPSEC-2026-2785/advisory.json",
 "markdown_url": "https://wpsec.com/vuln/WPSEC-2026-2785/index.md",
 "title": "Defender Security <= 6.4.0 - Unauthenticated Two-Factor Authentication Bypass via Brute Force",
 "description": "The Defender Security plugin for WordPress is vulnerable to Two-Factor Authentication Bypass via brute force in all versions up to, and including, 6.4.0, due to failed two-factor code attempts only being counted and locked out when the Login Protection feature (disabled by default) was enabled. This makes it possible for unauthenticated attackers who already know a user's password to guess the two-factor code without limit and log in as that user.",
 "plugin": {
  "slug": "defender-security",
  "name": "Defender Security",
  "full_name": "Defender Security – Malware Scanner, Login Security & Firewall",
  "wordpress_org": "https://wordpress.org/plugins/defender-security/",
  "advisories_url": "https://wpsec.com/vuln/plugin/defender-security/",
  "attacksurface": "https://attacksurface.wpsec.com/plugin/defender-security"
 },
 "type": "AUTHBYPASS",
 "cwe": [
  "CWE-307"
 ],
 "cve": [],
 "cvss": {
  "version": "3.1",
  "score": 7.4,
  "vector": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N",
  "severity": "High"
 },
 "affected": {
  "ranges": [
   {
    "from": null,
    "from_inclusive": true,
    "to": "6.4.1",
    "to_inclusive": false
   }
  ],
  "text": [
   "all versions before 6.4.1"
  ]
 },
 "introduced_in": null,
 "fixed_in": "6.4.1",
 "remediation": "Update to 6.4.1 or later.",
 "fix_released": "2026-11-09T09:22:54+00:00",
 "published": "2026-11-10T09:43:43+00:00",
 "updated": "2026-11-09T23:36:09.962247+00:00",
 "also_published_as": null,
 "references": [
  "https://wpsec.com/vuln/WPSEC-2026-2785/",
  "https://plugins.svn.wordpress.org/defender-security/tags/6.4.1/",
  "https://wordpress.org/plugins/defender-security/"
 ],
 "attacksurface_url": "https://attacksurface.wpsec.com/plugin/defender-security",
 "source": "WPSec",
 "license": {
  "name": "CC BY 4.0",
  "url": "https://creativecommons.org/licenses/by/4.0/"
 },
 "usage": {
  "plugin": "Low",
  "affected_versions": "Low",
  "as_of": "2026-11-10"
 }
}