Shield Security <= 21.0.9 - Authenticated (Subscriber+) Insecure Direct Object Reference to Disable Google Authenticator
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- None · Low · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-639.
Summary
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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| paultgoodchild | Shield: Blocks Bots, Protects Users, and Prevents Security Breaches | up to 21.0.9 | — | No fix listed | CNA |
- Shield: Blocks Bots, Protects Users, and Prevents Security Breaches Vendorpaultgoodchild Affected up to 21.0.9 Fixed in — No fix listed CNA
CPE names Threatist (inferred) · 1
Inferred from how NVD named this product before; not given by a source.
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:getshieldsecurity:shield_security:*:*:*:*:*:*:*:* | — | — | Getshieldsecurity |
- cpe:2.3:a:getshieldsecurity:shield_security:*:*:*:*:*:*:*:* Versions — — ·Getshieldsecurity
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2025-15370
- 2026-10-03 Alias added: GHSA-3x79-282m-jh8f
References
Other 3
- 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
More paultgoodchild vulnerabilities
- TI-2026-83515 Stored cross-site scripting in Shield Security via request path CVSS 3.1HIGH 7.2
- TI-2026-00509 Shield Security <= 21.0.8 - Cross-Site Request Forgery to SQL Injection CVSS 3.1MEDIUM 6.5
- TI-2026-00363 Shield Security <= 21.0.8 - Unauthenticated Reflected Cross-Site Scripting via 'message' Parameter CVSS 3.1MEDIUM 6.1
- TI-2025-13178 Missing authorization in paultgoodchild Shield: Blocks Bots, Protects Users, and Prevents… CVSS 3.1MEDIUM 4.3
- TI-2024-04046 Shield Security – Smart Bot Blocking & Intrusion Prevention Security <= 19.1.13 - Cross-Site Request Forgery CVSS 3.1MEDIUM 4.3
Sources
- CVE-2025-15370 · CVE Program
- CVE-2025-15370 · NVD
- FIRST EPSS
- GHSA-3x79-282m-jh8f · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences