CVE-2026-11990 PUBLISHED

KiviCare <= 4.4.0 - Missing Authorization to Unauthenticated Payment Bypass and Appointment Status Manipulation via /payment-success REST Endpoint

Assigner: Wordfence
Reserved: 11.06.2026 Published: 10.07.2026 Updated: 10.07.2026

The KiviCare – Clinic & Patient Management System (EHR) plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 4.4.0. This is due to the plugin not properly verifying that a user is authorized to perform an action. This makes it possible for unauthenticated attackers to mark arbitrary pending appointments as Confirmed and forge an associated completed payment record in wp_kc_payments_appointment_mappings using an attacker-supplied payment ID, bypassing payment entirely. This exploit is achievable on a default installation because the gateway resolution logic returns all registered gateways regardless of admin-enabled status, making the manual (KCPayLater) gateway always selectable.

Metrics

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
CVSS Score: 5.3

Product Status

Vendor iqonicdesign
Product KiviCare – Clinic & Patient Management System (EHR)
Versions Default: unaffected
  • affected from 0 to 4.4.0 (incl.)

Credits

  • Niv Kochan finder

References

Problem Types

  • CWE-862 Missing Authorization CWE