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CVE-2026-11990

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

MEDIUM
5.3
CVSS Score
Published: July 10, 2026 at 09:32 AM UTC
Updated: July 10, 2026 at 07:17 PM UTC
1 product affected across 1 vendorKiviCare

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Severity
MEDIUM5.3
Exploit prediction
EPSS 0.6%
SSVC
No known exploit

Description

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

KiviCare· Iqonicdesignwordpress-plugin
60%
v ≤ 4.4.0

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (12)

Source: cverecord
https://www.wordfence.com/threat-intel/vulnerabilities/id/efe4223a-5c1a-401e-a46b-0278e96d2d71?source=cve
Source: cverecord
https://plugins.trac.wordpress.org/browser/kivicare-clinic-management-system/tags/4.4.0/app/controllers/api/AppointmentsController.php#L3931
Source: cverecord
https://plugins.trac.wordpress.org/browser/kivicare-clinic-management-system/tags/4.4.0/app/controllers/api/AppointmentsController.php#L465
Source: cverecord
https://plugins.trac.wordpress.org/browser/kivicare-clinic-management-system/tags/4.4.0/app/paymentGateways/KCPayLater.php#L109
Source: cverecord
https://plugins.trac.wordpress.org/browser/kivicare-clinic-management-system/tags/4.4.0/app/services/KCAppointmentPaymentService.php#L32
Source: cverecord
https://plugins.trac.wordpress.org/browser/kivicare-clinic-management-system/tags/4.4.0/app/baseClasses/KCPaymentGatewayFactory.php#L131
Source: cverecord
https://plugins.trac.wordpress.org/browser/kivicare-clinic-management-system/tags/4.3.0/app/controllers/api/AppointmentsController.php#L3931
Source: cverecord
https://plugins.trac.wordpress.org/browser/kivicare-clinic-management-system/tags/4.3.0/app/controllers/api/AppointmentsController.php#L465

SSVC — Action Prioritization

SSVCNo known exploitAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

5.3MEDIUMWordfence
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-862

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