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Threat intelligence

Appointment Booking Calendar — Simply Schedule Appointments Booking Plugin <= 1.6.11.5 - Unauthenticated Denial of Service

CVE-2026-7493 · simply-schedule-appointments

Important: Seeing this vulnerability listed does not mean your website is affected. Exposure depends on whether you run Simply Schedule Appointments at a vulnerable version. How SiteRespond intelligence works

Vulnerability
Appointment Booking Calendar — Simply Schedule Appointments Booking Plugin <= 1.6.11.5 - Unauthenticated Denial of Service
Affected software
simply-schedule-appointments(Plugin)
Affected versions
  • ≤ 1.6.11.5
Authentication
Unauthenticated
Vulnerability type
Denial of service
Published
26 May 2026
CISA KEV
Not listed in CISA KEV at last catalog refresh
Impact
This advisory describes a denial of service issue in the affected software. Review the source advisory and your installed version to assess exposure.
Source

Data imported from Wordfence Intelligence (advisory ae66228e-d086-44fd-8acb-5a99482cedfb). Methodology and redistribution notes

Check whether your installed version is affected

SiteRespond Defence matches your installed Simply Schedule Appointments version against this catalog when the Defence plugin is connected to your WordPress site.