Authorization Flaw in KiviCare Plugin Enables Information Disclosure
CVE-2026-13611

5.3MEDIUM

Key Information:

Vendor

WordPress
Status
Kivicare
Vendor
CVE Published:
1 September 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-13611?

The KiviCare WordPress plugin prior to version 4.5.5 contains a significant security vulnerability that fails to enforce authorization checks on certain REST API endpoints. This oversight allows unauthenticated attackers to gain access to sensitive information, including the patient roster and, in instances where a payment gateway is integrated, the sensitive payment gateway secret key. This breach poses serious risks to user data and payment confidentiality.

Affected Version(s)

KiviCare 0 < 4.5.5

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-13611 - Proof of Concept

References

https://wpscan.com/vulnerability/b3f986c8-fa7f-4115-9f33-...
exploitvdb-entrytechnical-description

CVSS V3.1

Score:
5.3
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
None
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Sai Praneeth Koti
WPScan
.