Vulnerability · Published Jan 16, 2026 · Assigned by Wordfence
CVE-2025-15370Shield Security <= 21.0.9 - Authenticated (Subscriber+) Insecure Direct Object Reference to Disable Google Authenticator
Medium 4.3
In plain English
A medium-severity authorization bypass via user-controlled key in Shield: Blocks Bots, Protects Users, and Prevents Security Breaches from paultgoodchild. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 18% of all known vulnerabilities).
Official 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 (as reported)
| Vendor | Product | Versions |
|---|---|---|
| paultgoodchild | Shield: Blocks Bots, Protects Users, and Prevents Security Breaches | 0 – through 21.0.9 |
Weakness: CWE-639 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
References
- https://www.wordfence.com/threat-intel/vulnerabilities/id/d777014a-5397-4062-af39-7ea86589a0d0?source=cve
- 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