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CVE-2026-7493

Appointment Booking Calendar — Simply Schedule Appointments Booking Plugin <= 1.6.11.5 - Unauthenticated Denial of Service PUBLISHED

Description (CNA)

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 (CNA)

Vendor / productVersions
croixhaug / Appointment Booking Calendar — Simply Schedule Appointments Booking Pluginaffected 0 through 1.6.11.5

CWE

CWE-400

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.