CVE-2026-87966

Easy Appointments 4.0 - 4.0.2.1 - Unauthenticated Arbitrary Appointment Modification and Deletion via IDOR

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.

Affected

Easy Appointments

CVSS v3.1 CNA

5.3 MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

EPSS

0.30% chance of exploitation in the next 30 days, 22nd percentile

Published

2026-09-18

Proof-of-concept exploits (1)

• https://wpscan.com/vulnerability/e2e625f4-c146-4622-b439-3179c4484613/

References

• CVE Record
• NVD entry