How severe is CVE-2026-7797?

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

SQL Injection in Croixhaug Appointment Booking Calendar — Simply Schedule Appointments Plugin

CVE-2026-7797

The Appointment Booking Calendar — Simply Schedule Appointments Booking Plugin plugin for WordPress is vulnerable to time-based blind SQL Injection via the 'append_where_sql' parameter in all versions up to, and including, 1.6.11.8 due to…

Vulnerability class: SQL Injection

EPSS: 0.002 (36.5th 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-89 — SQL Injection

References

Frequently asked questions

What is CVE-2026-7797?: CVE-2026-7797 is a high-severity vulnerability in Croixhaug Appointment Booking Calendar — Simply Schedule Appointments Plugin, classified under SQL Injection. CVSS score: 7.5/10. Published 2026-05-28.
How severe is CVE-2026-7797?: High severity. CVSS v3 base score is 7.5 out of 10.