CVE-2026-28028 is a Local File Inclusion (LFI) vulnerability found in the ThemeREX MoneyFlow WordPress theme, specifically in versions up to 1.0. The vulnerability arises from improper control over the filename parameter used in PHP include or require statements. This flaw allows an attacker to manipulate the input to these statements, causing the application to include unintended local files from the server. Such inclusion can lead to disclosure of sensitive files (e.g., configuration files, password files) or even remote code execution if an attacker can upload malicious files to the server. The vulnerability is categorized as an improper control of filename for include/require statements, a common PHP security issue. Exploitation typically involves sending crafted HTTP requests that manipulate the vulnerable parameter to point to local files. No authentication is required, increasing the attack surface. Although no public exploits are currently known, the vulnerability is published and could be targeted by attackers. The lack of a CVSS score indicates that the vulnerability is newly disclosed and awaiting further analysis. The vulnerability affects the MoneyFlow theme, which is used by WordPress sites, potentially impacting a wide range of websites that rely on this theme for their front-end presentation and functionality.

The primary impact of CVE-2026-28028 is unauthorized local file inclusion, which can lead to sensitive information disclosure, such as configuration files containing database credentials or other secrets. This can facilitate further attacks like privilege escalation or remote code execution if attackers can leverage the included files to execute arbitrary PHP code. For organizations, this can result in data breaches, website defacement, loss of customer trust, and potential regulatory penalties. Since the vulnerability does not require authentication, any attacker with network access to the vulnerable web server can attempt exploitation, increasing the risk. The scope includes all websites running the affected MoneyFlow theme versions, which may be substantial given WordPress's global popularity. The availability of the website could also be impacted if attackers use the vulnerability to execute denial-of-service attacks or crash the server. Overall, the vulnerability poses a significant risk to confidentiality, integrity, and availability of affected systems.

Organizations should immediately identify if they are using the ThemeREX MoneyFlow theme, particularly versions up to 1.0. Since no official patch links are currently available, administrators should monitor the vendor’s website and trusted security advisories for updates or patches. In the interim, restrict access to the vulnerable web application by implementing web application firewall (WAF) rules that detect and block suspicious include or require parameter manipulations. Disable or restrict PHP functions like include, require, include_once, and require_once if possible or use PHP configuration directives such as open_basedir to limit file inclusion paths. Conduct thorough code reviews to identify and sanitize any user-controlled inputs used in file inclusion statements. Employ strict input validation and sanitization to prevent injection of arbitrary file paths. Consider isolating the web server environment to limit the impact of potential exploitation. Regularly back up website data and configurations to enable recovery in case of compromise. Finally, educate development teams about secure coding practices to prevent similar vulnerabilities in the future.