CVE-2026-7493
Medium · 5.3CVSS
5.3
EPSS
0.4%
Published
May 27, 2026
CISA due date
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The record
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.
Affected packages
| Ecosystem | Package | Introduced | Fixed |
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