Shield Security <= 21.0.9 - Authenticated (Subscriber+) Insecure Direct Object Reference to Disable Google Authenticator

Authorization Bypass Through User-Controlled Key
CVE CVE-2025-15370
CVSS Medium (4.3)
Publicly Published January 15, 2026
Last Updated January 16, 2026
Researcher Dmitrii Ignatyev
Description

The Shield: Blocks Bots, Protects Users, and Prevents Security Breaches plugin for WordPress is vulnerable to Insecure Direct Object Reference in all versions up to, and including, 21.0.9 via the MfaGoogleAuthToggle class due to missing validation on a user controlled key. This makes it possible for authenticated attackers, with Subscriber-level access and above, to disable Google Authenticator for any user.

References

1 affected software package

Software Type Plugin
Software Slug wp-simple-firewall (view on wordpress.org)
Patched? Yes
Affected Version
  • <= 21.0.9
Patched Version
  • 21.0.10
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