Access Control Vulnerability in SiteGround Security Plugin by SiteGround
CVE-2025-66121

5.3MEDIUM

Key Information:

Vendor

WordPress
Status
Siteground Security
Vendor
CVE Published:
16 December 2025

What is CVE-2025-66121?

A missing authorization issue has been identified in the SiteGround Security plugin, which can lead to exploiting incorrectly configured access control security levels. This vulnerability affects users of SiteGround Security from n/a through version 1.5.8, potentially allowing unauthorized actions due to inadequate protection mechanisms.

Affected Version(s)

SiteGround Security 0 <= 1.5.8

References

https://patchstack.com/database/Wordpress/Plugin/sg-secur...
vdb-entry

CVSS V3.1

Score:
5.3
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Legion Hunter | Patchstack Bug Bounty Program
.