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Defender Security – Malware Scanner, Login Security & Firewall

defender-security · plugin

Known security vulnerabilities for Defender Security – Malware Scanner, Login Security & Firewall. Find out in seconds which version runs on your site with WP Lens.

6 known vulnerabilities

3 critical · 5 exploitable without logging in · latest Nov 1, 2024

Listed on wordpress.org · latest 6.3.0 · last updated Sep 29, 2026 · 80K+ installs

wordpress.org status checked on Oct 5, 2026

Vulnerabilities

  • CVE-2024-37444unauthenticated≤ 4.7.1

    WordPress Defender plugin <= 4.7.1 - Broken Access Control vulnerability

    Critical 9.8

  • CVE-2023-47189unauthenticated≤ 4.2.0

    WordPress Defender Security plugin <= 4.2.0 - Masked Login Area View Bypass vulnerability

    Critical 9.8

  • CVE-2022-44581login required≤ 3.3.2

    WordPress Defender Security plugin <= 3.3.2 - Broken Authentication vulnerability

    Critical 9.8

  • CVE-2023-51490unauthenticated≤ 4.1.0

    WordPress Defender Security Plugin <= 4.1.0 is vulnerable to Sensitive Data Exposure

    High 7.5

  • CVE-2024-25595unauthenticated≤ 4.4.1

    WordPress Defender Security plugin <= 4.4.1 - IP Restriction Bypass vulnerability

    Medium 5.3

  • CVE-2021-4425unauthenticated · needs a click≤ 2.4.6

    Defender Security <= 2.4.6 - Cross-Site Request Forgery Bypass

    Medium 4.3

The access label is read from the record's own text (e.g. “subscriber+”: subscriber and above). When the text names no role, CVSS decides between “login required” and “high privilege”; no role name is invented. “Needs a click”: the attack depends on a logged-in user following a link (CSRF, reflected XSS).

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