CyberRota Analysis
This is a medium severity vulnerability with a CVSS score of 5.3. It affects WordPress. Exploitation may require the attacker to be authenticated. It may lead to a denial-of-service condition.
Original NVD 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.