CVE-2026-57813criticalobserved exploitationCWE-266

CVE-2026-57813: critical vulnerability in properfraction MailOptin

WordPress MailOptin plugin <= 1.2.77.3 - Privilege Escalation vulnerability

Published

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50Vexday Risk Score

Prioritize patching. It exploitation observed by VulnCheck.

ssvc Actcvss 9.8epss 0.5%
from disclosure to weapon
Published on NVDJul 13
VulnCheckJul 9
Incorrect Privilege Assignment vulnerability in properfraction MailOptin mailoptin allows Privilege Escalation.This issue affects MailOptin: from n/a through <= 1.2.77.3.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected products
properfraction · MailOptin
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CVE-2025-58596MEDIUMWordPress MailOptin Plugin <= 1.2.75.0 - Cross Site Scripting (XSS) VulnerabilityEPSS 0.2%CVE-2026-66703MEDIUMWordPress MailOptin plugin <= 1.2.78.0 - Cross Site Scripting (XSS) vulnerabilityEPSS 0.2%