Description
Unauthenticated Bypass Vulnerability in SiteGround Security <= 1.6.6 versions.
Published: 2026-08-31
Score: 8.1 High
EPSS: n/a
KEV: No
Impact: n/a
Action: n/a
AI Analysis

Impact

The vulnerability in the SiteGround Security plugin allows an attacker to bypass the two‑factor authentication mechanism without any prior credentials, effectively granting unrestricted access to the WordPress site's administrative functions. This flaw can lead to full site compromise, data theft, or further exploitation within the web application.

Affected Systems

SiteGround Security plugin for WordPress, releases version 1.6.6 and earlier. The issue is fixed starting with version 1.6.7 and later.

Risk and Exploitability

The CVSS score of 8.1 classifies the issue as high severity. The EPSS score is not available, and the vulnerability is not listed in CISA’s KEV catalog. Attackers can exploit the flaw remotely via the plugin’s authentication endpoints, requiring no existing credentials. The combination of a high impact and a remotely exploitable vector presents a significant threat to affected WordPress sites.

Generated by OpenCVE AI on August 31, 2026 at 21:36 UTC.

Remediation

Vendor Solution

Update the WordPress SiteGround Security Plugin to the latest available version (at least 1.6.7).

OpenCVE Recommended Actions

  • Upgrade the SiteGround Security plugin to version 1.6.7 or later.
  • Verify that two‑factor authentication is enforced by testing the login process after the upgrade.
  • Review all WordPress user accounts and reset passwords for accounts that may have been accessed through the vulnerability.

Generated by OpenCVE AI on August 31, 2026 at 21:36 UTC.

Tracking

Sign in to view the affected projects.

Advisories

No advisories yet.

History

Mon, 31 Aug 2026 22:15:00 +0000

Type Values Removed Values Added
First Time appeared Siteground
Siteground siteground Security
Wordpress
Wordpress wordpress
Vendors & Products Siteground
Siteground siteground Security
Wordpress
Wordpress wordpress

Mon, 31 Aug 2026 20:45:00 +0000

Type Values Removed Values Added
Description Unauthenticated Bypass Vulnerability in SiteGround Security <= 1.6.6 versions.
Title WordPress SiteGround Security plugin <= 1.6.6 - 2FA Bypass vulnerability
Weaknesses CWE-290
References
Metrics cvssV3_1

{'score': 8.1, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H'}

Subscriptions

Siteground Siteground Security
Wordpress Wordpress
cve-icon MITRE

Status: PUBLISHED

Assigner: Patchstack

Published:

Updated: 2026-08-31T20:30:55.611Z

Reserved: 2026-08-28T09:18:05.696Z

Link: CVE-2026-82228

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-08-31T21:17:53.570

Modified: 2026-08-31T21:17:53.570

Link: CVE-2026-82228

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-08-31T22:00:05Z

Weaknesses
  • CWE-290

    Authentication Bypass by Spoofing