CVE-2026-28035 is a Local File Inclusion (LFI) vulnerability found in the ThemeREX Printy WordPress theme, specifically affecting versions up to 1.8. The root cause is improper control of the filename parameter used in PHP include or require statements, which allows an attacker to manipulate the file path and include arbitrary local files from the server. This can lead to disclosure of sensitive information such as configuration files, source code, or credentials, and in some cases, may allow remote code execution if the attacker can include files containing malicious code. The vulnerability arises because the theme does not properly sanitize or validate user input controlling the filename parameter, enabling path traversal or direct file inclusion attacks. Although no public exploits are currently known, the vulnerability is publicly disclosed and documented in the CVE database. The lack of a CVSS score indicates that the vulnerability is newly published and may not yet have undergone comprehensive scoring. The affected product is a WordPress theme, which is widely used globally, increasing the potential attack surface. The vulnerability does not require authentication, making it exploitable by unauthenticated remote attackers, which significantly raises the risk profile. The absence of patch links suggests that a fix may not yet be available, emphasizing the need for immediate mitigation efforts by administrators.

The impact of CVE-2026-28035 can be severe for organizations using the affected ThemeREX Printy theme. Successful exploitation can lead to unauthorized disclosure of sensitive files, including configuration files containing database credentials or API keys, which compromises confidentiality. Attackers may also execute arbitrary code if they can include files with malicious payloads, threatening system integrity and availability. This can result in website defacement, data theft, or full server compromise. For organizations relying on the affected theme for their public-facing websites, this vulnerability can damage reputation, cause service disruption, and lead to regulatory non-compliance if sensitive data is exposed. The ease of exploitation without authentication increases the likelihood of automated attacks and widespread exploitation once exploit code becomes available. The impact is magnified in environments where the web server has elevated privileges or where sensitive internal files are accessible. Overall, this vulnerability poses a significant risk to the confidentiality, integrity, and availability of affected systems.

To mitigate CVE-2026-28035, organizations should immediately audit their WordPress installations to identify if the ThemeREX Printy theme version 1.8 or earlier is in use. If so, they should apply any available patches or updates from the vendor as soon as they are released. In the absence of an official patch, administrators should consider temporarily disabling or replacing the vulnerable theme to prevent exploitation. Implementing Web Application Firewall (WAF) rules to detect and block suspicious requests attempting to manipulate include parameters or path traversal sequences can reduce exposure. Restricting file permissions on the server to limit access to sensitive files and directories can minimize the impact of LFI attacks. Additionally, enabling PHP configurations such as open_basedir to restrict file access and disabling dangerous PHP functions (e.g., include, require) where possible can help. Regular monitoring of web server logs for unusual access patterns and deploying intrusion detection systems can provide early warning of exploitation attempts. Finally, educating developers and administrators on secure coding practices to validate and sanitize all user inputs is essential to prevent similar vulnerabilities.