CVE-2026-57813

CRITICAL 9.8

WordPress MailOptin plugin <= 1.2.77.3 - Privilege Escalation vulnerability

CVSS Score

9.8

EPSS Score

0.5%

EPSS Percentile

38th

Incorrect Privilege Assignment vulnerability in properfraction MailOptin mailoptin allows Privilege Escalation.This issue affects MailOptin: from n/a through <= 1.2.77.3.

CWE	CWE-266
Vendor	properfraction
Product	mailoptin
Published	Jul 13, 2026
Last Updated	Jul 13, 2026

Stay Ahead of the Next One

Get instant alerts for properfraction mailoptin

Be the first to know when new critical vulnerabilities affecting properfraction mailoptin are published — delivered to Slack, Telegram or Discord.

Get Free Alerts → Free · No credit card · 60 sec setup

CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Affected Versions

properfraction / MailOptin

0 ≤ 1.2.77.3

References

NVD ↗ CVE.org ↗ EPSS Data ↗

patchstack.com: https://patchstack.com/database/Wordpress/Plugin/mailoptin/vulnerability/wordpress-mailoptin-plugin-1-2-77-3-privilege-escalation-vulnerability?_s_id=cve

Credits

qdtad | Patchstack Bug Bounty Program