CVE-2026-0927 is a vulnerability identified in the KiviCare – Clinic & Patient Management System (EHR) WordPress plugin developed by iqonicdesign. The flaw arises from missing authorization checks in the uploadMedicalReport() function, which handles file uploads of medical reports. This vulnerability affects all versions up to and including 3.6.15. Because the authorization is missing, unauthenticated attackers can upload arbitrary text files and PDF documents directly to the server hosting the affected WordPress site. The lack of authentication and user interaction requirements makes this vulnerability remotely exploitable over the network with low complexity. Although the vulnerability does not allow direct access to sensitive data or system disruption, it compromises the integrity of the system by enabling attackers to place malicious content or phishing pages on the server. Such files could be used to conduct social engineering attacks, distribute malware, or facilitate further exploitation of the hosting environment. The CVSS v3.1 base score is 5.3 (medium severity), reflecting the network attack vector, no privileges required, no user interaction, and impact limited to integrity. No patches or known exploits have been reported at the time of publication, but the risk remains significant due to the critical nature of healthcare data and systems. The vulnerability is classified under CWE-862 (Missing Authorization), highlighting the failure to enforce proper access control on sensitive functions.

For European organizations, particularly those in the healthcare sector using the KiviCare EHR plugin, this vulnerability poses a risk of unauthorized file uploads that can undermine the integrity of their web infrastructure. Attackers could upload malicious PDFs or text files that serve as phishing pages or malware delivery vectors, potentially compromising patient trust and violating data protection regulations such as GDPR. While direct data breach or system downtime is not a primary consequence, the ability to host malicious content on trusted healthcare domains can facilitate broader attacks, including credential theft or ransomware deployment. This could lead to reputational damage, regulatory penalties, and operational disruptions. The impact is heightened in Europe due to stringent healthcare data protection requirements and the critical nature of EHR systems. Additionally, the vulnerability could be leveraged as a foothold for lateral movement within healthcare networks, increasing the risk of more severe intrusions.

Immediate mitigation should focus on restricting file upload capabilities by implementing strict server-side validation and authorization checks to ensure only authenticated and authorized users can upload files. Until an official patch is released by iqonicdesign, organizations should deploy Web Application Firewalls (WAFs) with rules to detect and block unauthorized upload attempts, especially targeting the uploadMedicalReport() endpoint. Disabling or restricting the plugin's file upload functionality temporarily can reduce exposure. Monitoring web server logs for unusual upload activity and scanning uploaded files for malicious content is critical. Organizations should also enforce least privilege principles on WordPress user roles and ensure that the plugin and WordPress core are kept up to date. Conducting security audits and penetration testing focused on file upload mechanisms can help identify residual risks. Finally, educating staff about phishing risks associated with malicious PDFs hosted on trusted domains can reduce the likelihood of successful social engineering attacks.