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

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Summary

CVECVE-2026-11990
StatePUBLISHED
AssignerWordfence
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-07-10 10:16:21 UTC
Updated2026-07-10 19:17:19 UTC
DescriptionThe 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.

Risk And Classification

Primary CVSS: v3.1 5.3 MEDIUM from [email protected]

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

EPSS: 0.005610000 probability, percentile 0.427210000 (date 2026-07-10)

Problem Types: CWE-862 | CWE-862 CWE-862 Missing Authorization

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary5.3MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
3.1CNADECLARED5.3MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
Low
Availability
None

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

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Iqonicdesign KiviCare Clinic Patient Management System EHR affected 4.4.0 semver Not specified

References

ReferenceSourceLinkTags
plugins.trac.wordpress.org/browser/kivicare-clinic-management-system/tags/4.4.0/app/cont... [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/kivicare-clinic-management-system/tags/4.4.0/app/paym... [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/kivicare-clinic-management-system/tags/4.4.0/app/base... [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/kivicare-clinic-management-system/tags/4.3.0/app/cont... [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/kivicare-clinic-management-system/tags/4.4.0/app/cont... [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/kivicare-clinic-management-system/tags/4.3.0/app/base... [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/changeset [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/kivicare-clinic-management-system/tags/4.3.0/app/serv... [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/kivicare-clinic-management-system/tags/4.3.0/app/cont... [email protected] plugins.trac.wordpress.org
www.wordfence.com/threat-intel/vulnerabilities/id/efe4223a-5c1a-401e-a46b-0278e... [email protected] www.wordfence.com
plugins.trac.wordpress.org/browser/kivicare-clinic-management-system/tags/4.3.0/app/paym... [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/kivicare-clinic-management-system/tags/4.4.0/app/serv... [email protected] plugins.trac.wordpress.org
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: Niv Kochan (en)

Additional Advisory Data

SourceTimeEvent
CNA2026-06-11T14:53:34.000ZVendor Notified
CNA2026-07-09T20:52:40.000ZDisclosed
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