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CVE-2026-82228— WordPress SiteGround Security plugin <= 1.6.6 - 2FA Bypass vulnerability

Quick assessment

Affected
SiteGround SiteGround Security
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

siteground security是siteground公司的一个网站安全防护插件。 siteground security 1.6.6及之前版本存在授权问题漏洞，该漏洞源于身份验证绕过，可能导致未经身份验证的攻击者绕过身份验证。

CVSS 8.1 · High EPSS 0.40% · P33

Affected Version Matrix 1

VendorProduct Version RangeStatus
SiteGround SiteGround Security n/a≤ 1.6.6 affected
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I. Basic Information for CVE-2026-82228

Vulnerability Information
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Vulnerability Title
WordPress SiteGround Security plugin <= 1.6.6 - 2FA Bypass vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
Unauthenticated Bypass Vulnerability in SiteGround Security <= 1.6.6 versions.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
使用欺骗进行的认证绕过
Source: CVE Program / CVE List V5
Vulnerability Title
siteground security 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
siteground security是siteground公司的一个网站安全防护插件。 siteground security 1.6.6及之前版本存在授权问题漏洞，该漏洞源于身份验证绕过，可能导致未经身份验证的攻击者绕过身份验证。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
SiteGround SiteGround Security n/a ~ 1.6.6 -

II. Public POCs for CVE-2026-82228

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III. Intelligence Information for CVE-2026-82228

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Vendor Pages for CVE-2026-82228 (1)

IV. Related Vulnerabilities

Same product: SiteGround Security
Same vendor: SiteGround
Same weakness: CWE-290

V. Comments for CVE-2026-82228

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