CVE-2026-0927 identifies a missing authorization vulnerability (CWE-862) in the KiviCare – Clinic & Patient Management System (EHR) WordPress plugin developed by iqonicdesign. The vulnerability exists in the uploadMedicalReport() function across all versions up to and including 3.6.15, where the plugin fails to verify whether the user has the necessary permissions before allowing file uploads. This flaw enables unauthenticated attackers to upload arbitrary text and PDF files directly to the server hosting the affected WordPress site. Since no authentication or user interaction is required, the attack surface is broad and easily exploitable remotely. Uploaded files could be used to host malicious content such as phishing pages or malware, potentially facilitating further compromise of the server or its users. The CVSS v3.1 base score is 5.3 (medium severity), reflecting network exploitability without privileges or user interaction, with impact limited to integrity (unauthorized file upload) but no direct confidentiality or availability impact. No patches or known exploits are currently reported, but the vulnerability poses a significant risk to the integrity of healthcare data management systems relying on this plugin. The vulnerability highlights the critical need for proper authorization checks in sensitive healthcare applications to prevent unauthorized access and manipulation.

For European organizations, particularly those in the healthcare sector using the KiviCare plugin, this vulnerability poses a risk of unauthorized file uploads that can undermine system integrity and trustworthiness. Attackers could leverage this to host phishing pages or malicious documents, potentially leading to credential theft, malware distribution, or further network compromise. Given the sensitive nature of Electronic Health Records (EHR), any compromise could have severe consequences including regulatory penalties under GDPR, reputational damage, and disruption of healthcare services. The vulnerability does not directly impact confidentiality or availability but can serve as a foothold for more damaging attacks. European healthcare providers with limited security monitoring or outdated plugin versions are especially vulnerable. The risk extends to patient safety if attackers manipulate or disrupt medical data workflows. Additionally, the presence of this vulnerability in a WordPress plugin increases exposure due to WordPress's widespread use and frequent targeting by attackers.

1. Immediately audit all WordPress sites using the KiviCare plugin to identify affected versions (up to 3.6.15). 2. Apply vendor patches or updates as soon as they become available; if no patch exists yet, consider disabling the plugin temporarily to prevent exploitation. 3. Implement strict file upload restrictions on the web server and WordPress environment, such as limiting allowed file types, scanning uploads for malware, and enforcing size limits. 4. Harden WordPress security by restricting permissions on upload directories to prevent execution of uploaded files. 5. Monitor web server logs and WordPress activity logs for unusual file uploads or access patterns indicative of exploitation attempts. 6. Employ Web Application Firewalls (WAFs) with custom rules to detect and block unauthorized upload attempts targeting the vulnerable function. 7. Educate IT and security teams in healthcare organizations about this vulnerability and encourage proactive vulnerability management. 8. Conduct regular security assessments on WordPress plugins, especially those handling sensitive data like EHRs, to identify and remediate authorization issues early.