Vulnerabilities / Security Optimizer – The All-In-One Protection Plugin / WPSEC-2026-0990
Security Optimizer – The All-In-One Protection Plugin <= 1.6.8 - Unauthenticated Two-Factor Authentication Bypass for Multisite Super Administrators
High 8.1
CWE-287Fixed in 1.6.9
- ID
- WPSEC-2026-0990
- Plugin
- Security Optimizer – The All-In-One Protection Plugin (sg-security)
- Affected
- all versions before 1.6.9
- Remediation
- Update to 1.6.9 or later.
- CVSS 3.1
- CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
- Weakness
- CWE-287
- Usage
- Plugin Low · Affected versions None seen among sites WPSec scans, 2026-10-15
- Attack surface
- Security Optimizer – The All-In-One Protection Plugin on WPSec AttackSurface
- Fix released
- Published
Description
The Security Optimizer plugin for WordPress is vulnerable to Two-Factor Authentication Bypass in all versions up to, and including, 1.6.8 due to the 2FA requirement being determined only from the user's roles on the current site. On multisite installations, Super Administrators who have no role on the site they log in through were treated as out of 2FA scope, so the second factor was never requested. This makes it possible for unauthenticated attackers who have obtained a Super Administrator's password to log in without providing the second factor.
References
- https://wpsec.com/vuln/WPSEC-2026-0990/
- https://plugins.svn.wordpress.org/sg-security/tags/1.6.9/
- https://wordpress.org/plugins/sg-security/
Published by WPSec. Provided as is, without warranty. Corrections: contact us.
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