What’s Vulnerable › Vulnerabilities

CVE-2025-15370: Shield Security <= 21.0.9 - Authenticated (Subscriber+) Insecure Direct Object Reference to Disable Google Authenticator

• Severity: medium (CVSS 4.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-01-16 · updated 2026-06-17
• Weakness: CWE-639

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.

Affected products

• paultgoodchild Shield: Blocks Bots, Protects Users, and Prevents Security Breaches: through 21.0.9

References

• https://plugins.trac.wordpress.org/browser/wp-simple-firewall/tags/21.0.8/src/lib/src/ActionRouter/Actions/MfaGoogleAuthToggle.php
• https://plugins.trac.wordpress.org/changeset/3438647/wp-simple-firewall
• https://www.wordfence.com/threat-intel/vulnerabilities/id/d777014a-5397-4062-af39-7ea86589a0d0?source=cve

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