CVE-2026-28043 in Healer Plugin
Summary
by MITRE • 03/05/2026
Improper Control of Filename for Include/Require Statement in PHP Program ('PHP Remote File Inclusion') vulnerability in ThemeREX Healer - Doctor, Clinic & Medical WordPress Theme healer allows PHP Local File Inclusion.This issue affects Healer - Doctor, Clinic & Medical WordPress Theme: from n/a through <= 1.0.0.
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Analysis
by VulDB Data Team • 03/07/2026
The CVE-2026-28043 vulnerability represents a critical PHP Remote File Inclusion flaw in the ThemeREX Healer - Doctor, Clinic & Medical WordPress theme, which exposes systems to unauthorized remote code execution through improper input validation. This vulnerability falls under the CWE-98 category, specifically addressing improper control of filename for include/require statements, making it a prime target for attackers seeking to escalate privileges and compromise web applications. The flaw manifests when the theme fails to properly sanitize user-supplied input before using it in include or require statements, creating an avenue for malicious actors to inject arbitrary file paths and execute unintended code.
The technical implementation of this vulnerability stems from the theme's failure to implement proper input validation and sanitization mechanisms when processing user-provided parameters that are subsequently used in PHP include or require functions. Attackers can exploit this weakness by crafting malicious URLs with crafted parameters that target the vulnerable include functionality, potentially allowing them to load and execute remote files or local system files. This particular vulnerability affects all versions of the theme up to and including version 1.0.0, indicating that the flaw has existed for some time without proper remediation. The vulnerability operates at the application layer and can be leveraged through standard HTTP requests, making it particularly dangerous as it requires minimal specialized tools or knowledge to exploit.
The operational impact of this vulnerability extends beyond simple code execution, as it provides attackers with the capability to perform persistent compromise of affected WordPress installations. Once exploited, attackers can establish backdoors, exfiltrate sensitive data, modify website content, or even use the compromised system as a pivot point for attacking internal network resources. The vulnerability's presence in a medical theme specifically increases the severity as it may affect healthcare-related data and systems that require strict compliance with regulations such as HIPAA. This attack vector aligns with the ATT&CK technique T1190 - Exploit Public-Facing Application, where adversaries target vulnerable web applications to gain initial access to target networks.
Mitigation strategies for this vulnerability must address both immediate remediation and long-term security posture improvements. The most effective immediate solution involves updating to the latest version of the ThemeREX Healer theme where the vulnerability has been patched and proper input validation has been implemented. Organizations should also implement web application firewalls that can detect and block suspicious include/require parameter patterns, along with strict input validation at the application level. Security hardening measures including disabling remote file inclusion capabilities in PHP configurations, implementing proper parameter sanitization, and conducting regular security audits of WordPress themes and plugins will significantly reduce the risk of exploitation. Additionally, organizations should monitor their systems for any signs of compromise and maintain up-to-date backups to ensure rapid recovery in case of successful exploitation attempts.