SiteGround Security <= 1.5.8 - Missing Authorization
| CVE | CVE-2025-66121 |
|---|---|
| CVSS | 5.3 (Medium) |
| Publicly Published | November 30, 2025 |
| Last Updated | January 15, 2026 |
| Researcher |
Legion Hunter
|
Description
The SiteGround Security plugin for WordPress is vulnerable to unauthorized access due to a missing capability check on a function in versions up to, and including, 1.5.8. This makes it possible for unauthenticated attackers to perform an unauthorized action.
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Vulnerability Details for Security Optimizer – The All-In-One Protection Plugin
| Software Type | Plugin |
|---|---|
| Software Slug | sg-security (view on wordpress.org) |
| Patched? | Yes |
| Remediation | Update to version 1.5.9, or a newer patched version |
| Affected Version |
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| Patched Version |
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Recent vulnerabilities in Security Optimizer – The All-In-One Protection Plugin
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