Appointment Booking Calendar — Simply Schedule Appointments Booking Plugin <= 1.6.11.5 - Unauthenticated Denial of Service
| CVE | CVE-2026-7493 |
|---|---|
| CVSS | 5.3 (Medium) |
| Publicly Published | May 26, 2026 |
| Last Updated | May 27, 2026 |
| Researcher |
lucky_buddy
|
Description
The Appointment Booking Calendar — Simply Schedule Appointments Booking Plugin plugin for WordPress is vulnerable to denial of service in all versions up to, and including, 1.6.11.5. This is due to a publicly accessible REST API endpoint (/wp-json/ssa/v1/async) that calls PHP's sleep() function on a user-supplied delay parameter without any rate limiting. This makes it possible for unauthenticated attackers to exhaust PHP worker processes, denying access to the site to legitimate users.
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Vulnerability Details for Simply Schedule Appointments
| Software Type | Plugin |
|---|---|
| Software Slug | simply-schedule-appointments (view on wordpress.org) |
| Patched? | Yes |
| Remediation | Update to version 1.6.11.7, or a newer patched version |
| Affected Version |
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| Patched Version |
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Recent vulnerabilities in Simply Schedule Appointments
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