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CVE-2026-66689— WordPress Anti Spam and list cleaner – AcyChecker plugin <= 2.0.0 - Broken Access Control vulnerability

CVSS 6.3 · Medium EPSS 0.19% · P9

Possible ATT&CK Techniques 1AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 1

VendorProductVersion RangeStatus
AcyMailing Newsletter TeamAnti Spam and list cleaner &#8211; AcyCheckern/a≤ 2.0.0affected
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I. Basic Information for CVE-2026-66689

Vulnerability Information
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Vulnerability Title
WordPress Anti Spam and list cleaner – AcyChecker plugin <= 2.0.0 - Broken Access Control vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
Unauthenticated Broken Access Control in Anti Spam and list cleaner &#8211; AcyChecker <= 2.0.0 versions.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制缺失
Source: CVE Program / CVE List V5
Vulnerability Title
WordPress AcyChecker 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
WordPress AcyChecker是WordPress基金会开源的一款CMS插件。 WordPress AcyChecker 2.0.0及之前版本存在授权问题漏洞，该漏洞源于未经验证的访问控制失效，可能导致攻击者绕过访问控制。
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

VendorProductAffected VersionsCPESubscribe
AcyMailing Newsletter TeamAnti Spam and list cleaner &#8211; AcyChecker n/a ~ 2.0.0 -

II. Public POCs for CVE-2026-66689

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III. Intelligence Information for CVE-2026-66689

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Vendor Advisories for CVE-2026-66689 (1)

Same Patch Batch · AcyMailing Newsletter Team · 2026-08-13 · 3 CVEs total

CVE-2026-281816.5 MEDIUMWordPress AcyMailing SMTP Newsletter plugin <= 10.11.1 - Broken Access Control vulnerabili
CVE-2026-281826.5 MEDIUMWordPress AcyMailing SMTP Newsletter plugin <= 10.11.1 - Cross Site Scripting (XSS) vulner

IV. Related Vulnerabilities

Same product: Anti Spam and list cleaner &#8211; AcyChecker
Same vendor: AcyMailing Newsletter Team
Same weakness: CWE-862

V. Comments for CVE-2026-66689

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