Vulnerability 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.
CVSS Score
MEDIUM
Related Weaknesses (CWE)
References
- https://plugins.trac.wordpress.org/browser/simply-schedule-appointments/tags/1.6
- https://www.wordfence.com/threat-intel/vulnerabilities/id/ae66228e-d086-44fd-8ac
FAQ
What is CVE-2026-7493?
CVE-2026-7493 is a vulnerability with a CVSS score of 5.3 (MEDIUM). 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 ...
How severe is CVE-2026-7493?
CVE-2026-7493 has been rated MEDIUM with a CVSS base score of 5.3/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-7493?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.