blogsafe.org My Downloads

BlogSafe.org

WordPress CVEs

Search and review WordPress-related vulnerability records.

← Back to CVE list

CVE-2021-4425

MEDIUM 4.3 CVSS 3.1
Published
July 12, 2023
Last modified
June 17, 2026
NVD status
Modified
Reported by
security@wordfence.com
Weakness
CWE-352
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N

Description

The Defender Security plugin for WordPress is vulnerable to Cross-Site Request Forgery in versions up to, and including, 2.4.6. This is due to missing or incorrect nonce validation on the verify_otp_login_time() function. This makes it possible for unauthenticated attackers to verify a one time login via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.

Affected WordPress components

  • Defender Security – Malware Scanner, Login Security & Firewall Plugin · defender-security
    Confirmed match Active
    Up to and including 2.4.6
    View on WordPress.org

A confirmed match is backed by the plugin or theme slug. A possible match is based on the product name only and should be verified.

Affected products and versions

  • wpmudev Defender Security – Malware Scanner, Login Security & Firewall — Up to and including 2.4.6
  • wpmudev defender_security — Up to and including 2.4.6

References

  • blog.nintechnet.com https://blog.nintechnet.com/25-wordpress-plugins-vulnerable-to-csrf-attacks/ Exploit, Third Party Advisory
  • blog.nintechnet.com https://blog.nintechnet.com/more-wordpress-plugins-and-themes-vulnerable-to-csrf-attacks/ Exploit, Third Party Advisory
  • blog.nintechnet.com https://blog.nintechnet.com/multiple-wordpress-plugins-fixed-csrf-vulnerabilities-part-1/ Exploit, Third Party Advisory
  • blog.nintechnet.com https://blog.nintechnet.com/multiple-wordpress-plugins-fixed-csrf-vulnerabilities-part-2/ Exploit, Third Party Advisory
  • blog.nintechnet.com https://blog.nintechnet.com/multiple-wordpress-plugins-fixed-csrf-vulnerabilities-part-3/ Exploit, Third Party Advisory
  • blog.nintechnet.com https://blog.nintechnet.com/multiple-wordpress-plugins-fixed-csrf-vulnerabilities-part-4/ Exploit, Third Party Advisory
  • blog.nintechnet.com https://blog.nintechnet.com/multiple-wordpress-plugins-fixed-csrf-vulnerabilities-part-5/ Exploit, Third Party Advisory
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=2473684%40defender-security&new=2473684%40defender-security&sfp_email=&sfph_mail= Patch, Product
  • www.wordfence.com https://www.wordfence.com/threat-intel/vulnerabilities/id/e772fbbe-33d5-46fa-a041-ab07d3f9318f?source=cve Exploit, Patch, Third Party Advisory
  • nvd.nist.gov Official NVD record