CVE-2026-28153 HIGH

CVE-2026-28153: WordPress Notification Master – Real-Time WordPress Notifications With Email, SMS, Webhooks & More plugin <= 1.7.1 - Broken Access Control vulnerability

Vendor Notification Master
Product Notification Master &#8211; Real-Time WordPress Notifications With Email, SMS, Webhooks &amp; More
Weakness CWE-862 · Missing authorization
Published August 24, 2026
Last update August 24, 2026
View on NVD All CVEs

CVSS base score

7.5/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality High
Integrity None

CVSS vector

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

What the vulnerability does

01Description

Unauthenticated Broken Access Control in Notification Master &#8211; Real-Time WordPress Notifications With Email, SMS, Webhooks &amp; More <= 1.7.1 versions.

Explanation of Vulnerability in Simple Terms

02Summary

Notification Master for WordPress fails to check user permissions before allowing access to sensitive notification data and settings. An unauthenticated attacker can read notification logs, webhook configurations, and other sensitive information without logging in. This affects all versions up to 1.7.1. Update immediately to a version newer than 1.7.1.

What an attacker can do

03Attacker Capabilities

Read notification logs, webhook URLs, email templates, and other sensitive plugin data without authentication.

Potential impact on your site

04Site Impact

Attackers can discover webhook endpoints, email addresses, SMS numbers, and notification content exposed by your site.

Conditions required to exploit

05Prerequisites

Network access only; no authentication or user interaction required.

Key dates

06Disclosure timeline

August 24, 2026 CVE published

Related vulnerabilities

08Related CVE

CVE-2026-66595 WordPress WP Data Access plugin <= 5.5.80 - Broken Access Control vulnerability CVE-2026-28181 WordPress AcyMailing SMTP Newsletter plugin <= 10.11.1 - Broken Access Control vulnerability CVE-2026-65554 WordPress AnsPress – Question and answer plugin 4.4.4 - Broken Access Control vulnerability CVE-2026-66459 WordPress AI for SEO plugin <= 2.4.2 - Broken Access Control vulnerability CVE-2026-73401 WordPress InstaWP Connect plugin <= 0.1.3.7 - Broken Access Control vulnerability