SiteGround Security <= 1.2.5 - Authentication Bypass via 2FA Setup
The SiteGround Security plugin for WordPress is vulnerable to authentication bypass that allows unauthenticated users to log in as administrative users due to missing identity verification on initial 2FA set-up that allows unauthenticated and unauthorized users to configure 2FA for pending accounts. Upon successful configuration, the attacker is logged in as that user without access to a username/password pair which is the expected first form of authentication. This affects versions up to, and including, 1.2.5.
Affected software
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| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| WordPress plugin | Security Optimizer – The All-In-One Protection Plugin | <= 1.2.5 | 1.2.6 |
References
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H- Weakness (CWE)
CWE-288- Platform
- WordPress
- Package
Security Optimizer – The All-In-One Protection Plugin- Disclosed
- 06.04.2022
- Updated
- 11.10.2026 10:22
Sources and licenses
Wordfence Intelligence - 6e5c6bf7-a653-4571-9566-574d2bb35c4f - Wordfence Intelligence
Copyright 1999-2026 The MITRE Corporation
Copyright 2012-2026 Defiant Inc.
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Vulnerability history: Security Optimizer – The All-In-One Protection Plugin
All published vulnerabilities of this package (WordPress plugin), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 7
- First → latest
- 04.2022 08.2026
- Without a fix
- 0
- Exploited in attacks
- 0
Severity breakdown
- Critical 1
- High 2
- Medium 4
Disclosures per year
- 2022: 2
- 2023: 1
- 2024: 1
- 2025: 1
- 2026: 2
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SiteGround Security <= 1.2.5 - Authentication Bypass via 2FA Setup this entry
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