CVE-2026-11990
KiviCare <= 4.4.0 - Missing Authorization to Unauthenticated Payment Bypass and Appointment Status Manipulation via /payment-success REST Endpoint
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.
INFO
Published Date :
July 10, 2026, 10:16 a.m.
Last Modified :
July 10, 2026, 10:16 a.m.
Remotely Exploit :
Yes !
Source :
[email protected]
Affected Products
The following products are affected by CVE-2026-11990
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | MEDIUM | [email protected] | ||||
| CVSS 3.1 | MEDIUM | MITRE-CVE |
Solution
- Update the KiviCare plugin to the latest version.
- Verify plugin settings for proper authorization controls.
- Review access logs for suspicious activity.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-11990.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-11990 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-11990
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-11990 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-11990 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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New CVE Received by [email protected]
Jul. 10, 2026
Action Type Old Value New Value Added Affected [{'vendor': 'iqonicdesign', 'product': 'KiviCare – Clinic & Patient Management System (EHR)', 'versions': [{'status': 'affected', 'version': '0', 'versionType': 'semver', 'lessThanOrEqual': '4.4.0'}], 'defaultStatus': 'unaffected'}] Added 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. Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N Added CWE CWE-862 Added Reference https://plugins.trac.wordpress.org/browser/kivicare-clinic-management-system/tags/4.3.0/app/baseClasses/KCPaymentGatewayFactory.php#L131 Added Reference https://plugins.trac.wordpress.org/browser/kivicare-clinic-management-system/tags/4.3.0/app/controllers/api/AppointmentsController.php#L3931 Added Reference https://plugins.trac.wordpress.org/browser/kivicare-clinic-management-system/tags/4.3.0/app/controllers/api/AppointmentsController.php#L465 Added Reference https://plugins.trac.wordpress.org/browser/kivicare-clinic-management-system/tags/4.3.0/app/paymentGateways/KCPayLater.php#L109 Added Reference https://plugins.trac.wordpress.org/browser/kivicare-clinic-management-system/tags/4.3.0/app/services/KCAppointmentPaymentService.php#L32 Added Reference https://plugins.trac.wordpress.org/browser/kivicare-clinic-management-system/tags/4.4.0/app/baseClasses/KCPaymentGatewayFactory.php#L131 Added Reference https://plugins.trac.wordpress.org/browser/kivicare-clinic-management-system/tags/4.4.0/app/controllers/api/AppointmentsController.php#L3931 Added Reference https://plugins.trac.wordpress.org/browser/kivicare-clinic-management-system/tags/4.4.0/app/controllers/api/AppointmentsController.php#L465 Added Reference https://plugins.trac.wordpress.org/browser/kivicare-clinic-management-system/tags/4.4.0/app/paymentGateways/KCPayLater.php#L109 Added Reference https://plugins.trac.wordpress.org/browser/kivicare-clinic-management-system/tags/4.4.0/app/services/KCAppointmentPaymentService.php#L32 Added Reference https://plugins.trac.wordpress.org/changeset?reponame=&old=3599918%40kivicare-clinic-management-system&new=3599918%40kivicare-clinic-management-system Added Reference https://www.wordfence.com/threat-intel/vulnerabilities/id/efe4223a-5c1a-401e-a46b-0278e96d2d71?source=cve