Auth bypass in Notification Master – Real-Time WordPress Notifications With Email, Sms, Webhooks &Amp; More

CVE-2026-28153

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

Vulnerability class: Broken Access Control

Published · last modified .

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.004 (35.1th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 35th percentile — 35.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2026-28153: held from 0.003 to 0.004.

EPSS over last 30 days · oldest: 0.003 · newest: 0.004 · change: +0.001

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-28153?
CVE-2026-28153 is a high-severity vulnerability in Notification Master &#8211; Real-Time WordPress Notifications With Email, Sms, Webhooks &Amp; More, classified under Missing Authorization. CVSS score: 7.5/10. Published 2026-08-24.
How severe is CVE-2026-28153?
High severity. CVSS v3 base score is 7.5 out of 10.