Auth bypass in Easy Appointments
CVE-2026-87966
The Easy Appointments WordPress plugin before 4.0.2.2 does not perform an ownership or authorization check on its unauthenticated appointment-reservation endpoint before updating an existing appointment identified by a request-supplied id, allowing unauthenticated attackers to overwrite, and through a follow-on cleanup delete, arbitrary appointments.
Vulnerability class: IDOR (Insecure Direct Object Reference)
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N.
Affected products
- Unknown Easy Appointments
Weakness classification (CWE)
References
- contact@wpscan.com (technical-description, exploit, vdb-entry)
Frequently asked questions
- What is CVE-2026-87966?
- CVE-2026-87966 is a medium-severity vulnerability in Easy Appointments, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 5.3/10. Published 2026-09-18.
- How severe is CVE-2026-87966?
- Medium severity. CVSS v3 base score is 5.3 out of 10.