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OpenAdvisories
Medium · 4.3 CVE-2021-4425 EUVD-2021-34252GHSA-wmpx-27x6-m5w5

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

Published Jul 12, 2023 · Updated Apr 8, 2026 · Assigned by Wordfence

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

VendorProductAffectedFixed
wpmudev Defender Security – Malware Scanner, Login Security & Firewall ≤ 2.4.6 —

References