🔐 CVE Alert

CVE-2026-66703

MEDIUM 6.5

WordPress MailOptin plugin <= 1.2.78.0 - Cross Site Scripting (XSS) vulnerability

CVSS Score
6.5
EPSS Score
0.0%
EPSS Percentile
0th

Contributor Cross Site Scripting (XSS) in MailOptin <= 1.2.78.0 versions.

CWE CWE-79
Vendor properfraction
Product mailoptin
Published Aug 6, 2026
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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L
Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
Required
Scope
Changed
Confidentiality
Low
Integrity
Low
Availability
Low

Affected Versions

properfraction / MailOptin
n/a ≤ 1.2.78.0

References

NVD ↗ CVE.org ↗ EPSS Data ↗
patchstack.com: https://patchstack.com/database/wordpress/plugin/mailoptin/vulnerability/wordpress-mailoptin-plugin-1-2-78-0-cross-site-scripting-xss-vulnerability?_s_id=cve

Credits

Ananda Dhakal (Patchstack) | Patchstack Bug Bounty Program