Medium severity4.3NVD Advisory· Published Jul 12, 2023· Updated Apr 8, 2026
CVE-2021-4425
CVE-2021-4425
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 products
2cpe:2.3:a:wpmudev:defender_security:*:*:*:*:*:wordpress:*:*+ 1 more
- cpe:2.3:a:wpmudev:defender_security:*:*:*:*:*:wordpress:*:*range: <=2.4.6
- (no CPE)range: <=2.4.6
Patches
Vulnerability mechanics
References
9- plugins.trac.wordpress.org/changesetnvdPatchProduct
- blog.nintechnet.com/25-wordpress-plugins-vulnerable-to-csrf-attacks/nvdExploitThird Party Advisory
- blog.nintechnet.com/more-wordpress-plugins-and-themes-vulnerable-to-csrf-attacks/nvdExploitThird Party Advisory
- blog.nintechnet.com/multiple-wordpress-plugins-fixed-csrf-vulnerabilities-part-1/nvdExploitThird Party Advisory
- blog.nintechnet.com/multiple-wordpress-plugins-fixed-csrf-vulnerabilities-part-2/nvdExploitThird Party Advisory
- blog.nintechnet.com/multiple-wordpress-plugins-fixed-csrf-vulnerabilities-part-3/nvdExploitThird Party Advisory
- blog.nintechnet.com/multiple-wordpress-plugins-fixed-csrf-vulnerabilities-part-4/nvdExploitThird Party Advisory
- blog.nintechnet.com/multiple-wordpress-plugins-fixed-csrf-vulnerabilities-part-5/nvdExploitThird Party Advisory
- www.wordfence.com/threat-intel/vulnerabilities/id/e772fbbe-33d5-46fa-a041-ab07d3f9318fnvdExploitPatchThird Party Advisory
News mentions
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