How severe is CVE-2026-6937?

Medium severity. CVSS v3 base score is 5.3 out of 10.

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

CVE-2026-6937

The Appointment Booking Calendar — Simply Schedule Appointments Booking Plugin plugin for WordPress is vulnerable to Missing Authorization in all versions up to, and including, 1.6.11.8 due to the plugin not properly verifying that a user…

Vulnerability class: Broken Access Control

EPSS: 0.002 (43.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/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-2026-6937?: CVE-2026-6937 is a medium-severity vulnerability in Croixhaug Appointment Booking Calendar — Simply Schedule Appointments Plugin, classified under Missing Authorization. CVSS score: 5.3/10. Published 2026-05-28.
How severe is CVE-2026-6937?: Medium severity. CVSS v3 base score is 5.3 out of 10.