SiteGround Security <= 1.5.8 - Missing Authorization

2025-11-30 00:00

Legion Hunter

Strategic Overview

Status

Patched in 1.5.9

Affected PluginSecurity Optimizer – The All-In-One Protection Plugin

Affected Version<= 1.5.8

CVSS5.3Medium

CVECVE-2025-66121

View all Security Optimizer – The All-In-One Protection Plugin vulnerabilities

Vulnerability Overview

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.

Technical Analysis

REMEDIATION: Update to version 1.5.9, or a newer patched version --- IDENTIFIER: CWE-862 (Missing Authorization) The product does not perform an authorization check when an actor attempts to access a resource or perform an action.

External References

https://www.cve.org/CVERecord?id=CVE-2025-66121 https://www.wordfence.com/threat-intel/vulnerabilities/id/25922abb-7604-4134-92e8-23a1559f57fb

CVSS Vector

5.3

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Base

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredNone
User InteractionNone
ScopeUnchanged
ConfidentialityNone
IntegrityLow
AvailabilityNone

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