CVE-2026-39495: WordPress Simply Schedule Appointments plugin <= 1.6.9.27 - SQL Injection vulnerability

Severity: high (CVSS 8.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-04-08 · updated 2026-07-24
Weakness: CWE-89

Description

Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection') vulnerability in NSquared Simply Schedule Appointments simply-schedule-appointments allows Blind SQL Injection.This issue affects Simply Schedule Appointments: from n/a through <= 1.6.9.27.

Affected products

croixhaug Appointment Booking Calendar — Simply Schedule Appointments Booking Plugin: through 1.6.9.27

References

https://patchstack.com/database/Wordpress/Plugin/simply-schedule-appointments/vulnerability/wordpress-simply-schedule-appointments-plugin-1-6-9-27-sql-injection-vulnerability?_s_id=cve

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