GHSA-599f-5f93-g6j8MediumCVSS 5.3
The Appointment Booking Calendar — Simply Schedule Appointments Booking Plugin plugin for...
🔗 CVE IDs covered (1)
📋 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.
🔗 References (4)
- https://nvd.nist.gov/vuln/detail/CVE-2026-7493
- https://plugins.trac.wordpress.org/browser/simply-schedule-appointments/tags/1.6.11.2/includes/class-async-action-model.php#L173
- https://www.wordfence.com/threat-intel/vulnerabilities/id/ae66228e-d086-44fd-8acb-5a99482cedfb?source=cve
- https://github.com/advisories/GHSA-599f-5f93-g6j8