Authentication Bypass in KiviCare Plugin for WordPress
CVE-2026-19416

Currently unrated

Key Information:

Vendor

WordPress

Status
Vendor
CVE Published:
19 August 2026

Badges

๐Ÿ‘พ Exploit Exists๐ŸŸก Public PoC

What is CVE-2026-19416?

The KiviCare WordPress plugin, prior to version 4.5.4, lacks sufficient checks to ensure that users are authorized to modify appointments. This flaw allows authenticated patients to manipulate other patients' appointments by canceling or rescheduling them without proper permissions. As a result, the vulnerability poses significant privacy and integrity risks to patient data and appointment management within the application.

Affected Version(s)

KiviCare 0 < 4.5.4

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.

References

Timeline

  • ๐ŸŸก

    Public PoC available

  • ๐Ÿ‘พ

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Erwan LR (WPScan)
WPScan
.