Medium severity · published Aug 13, 2026
CVE-2026-66689
WordPress Anti Spam and list cleaner – AcyChecker plugin <= 2.0.0 - Broken Access Control vulnerability
6.3
CVSS
0.3%
EPSS
No
On KEV
Description
Unauthenticated Broken Access Control in Anti Spam and list cleaner – AcyChecker <= 2.0.0 versions.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
Low
Integrity
Low
Availability
Low
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 18% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
AS
Anti Spam and list cleaner – AcyChecker · AcyMailing Newsletter Team
through 2.0.0 · source: vendor
Affected product
AS
Anti Spam and list cleaner – AcyChecker
AcyMailing Newsletter Team
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-66689
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-66689
patchstack.com
https://patchstack.com/database/wordpress/plugin/acychecker/vulnerability/wordpress-anti-spam-and-list-cleaner-acychecker-plugin-2-0-0-broken-access-control-vulnerability?_s_id=cve
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