How severe is CVE-2026-3045?

High severity. CVSS v3 base score is 7.5 out of 10.

Auth bypass in Croixhaug Appointment Booking Calendar — Simply Schedule Appointments Plugin

CVE-2026-3045

The Appointment Booking Calendar — Simply Schedule Appointments plugin for WordPress is vulnerable to unauthorized access of sensitive data in all versions up to and including 1.6.9.29. This is due to two compounding weaknesses: (1) a non-…

Vulnerability class: Broken Access Control

EPSS: 0.003 (21.0th percentile) — read the EPSS interpretation.

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.

Affected products

Croixhaug Appointment Booking Calendar — Simply Schedule Appointments Plugin — versions 0

Weakness classification (CWE)

CWE-862 — Missing Authorization

References

Frequently asked questions

What is CVE-2026-3045?: CVE-2026-3045 is a high-severity vulnerability in Croixhaug Appointment Booking Calendar — Simply Schedule Appointments Plugin, classified under Missing Authorization. CVSS score: 7.5/10. Published 2026-03-13.
How severe is CVE-2026-3045?: High severity. CVSS v3 base score is 7.5 out of 10.