CVE-2026-28061 is a security vulnerability identified in the ThemeREX Tiger Claw WordPress theme, specifically involving improper control of filenames used in PHP include or require statements. This vulnerability is classified as a PHP Local File Inclusion (LFI) issue, where the theme fails to properly validate or sanitize user input that determines which files are included or required by the PHP application. As a result, an attacker can manipulate the input to include arbitrary files from the server's filesystem. This can lead to disclosure of sensitive information such as configuration files, source code, or credentials stored on the server. In some cases, LFI vulnerabilities can be escalated to remote code execution if the attacker can include files containing malicious code or leverage other vulnerabilities. The affected versions of Tiger Claw are all versions up to and including 1.1.14. The vulnerability was published on March 5, 2026, with no CVSS score assigned yet and no known exploits reported in the wild. The root cause is insufficient input validation in the theme's PHP code handling file inclusion. This vulnerability is particularly dangerous because it does not require authentication or user interaction, making it easier for attackers to exploit remotely. The lack of an official patch at the time of reporting means users must take interim protective measures. The Tiger Claw theme is used in WordPress environments, which are widely deployed globally, increasing the potential attack surface. This vulnerability highlights the importance of secure coding practices around file inclusion and input validation in PHP applications.

The impact of CVE-2026-28061 can be significant for organizations using the ThemeREX Tiger Claw WordPress theme. Exploitation of this LFI vulnerability allows attackers to read arbitrary files on the web server, potentially exposing sensitive information such as database credentials, configuration files, or user data. This can lead to further compromise of the web application or backend systems. In some scenarios, attackers may chain this vulnerability with other exploits to achieve remote code execution, enabling full system compromise. The vulnerability affects the confidentiality and integrity of data and can also impact availability if attackers disrupt services or deface websites. Since WordPress is a widely used CMS and Tiger Claw is a commercial theme, many organizations including businesses, government agencies, and educational institutions could be at risk. The ease of exploitation without authentication increases the likelihood of automated scanning and attacks. The absence of known exploits currently limits immediate widespread damage, but the risk remains high until patches or mitigations are applied. Organizations relying on this theme for their public-facing websites face reputational damage and potential regulatory consequences if sensitive data is leaked.

To mitigate CVE-2026-28061, organizations should take the following specific steps: 1) Immediately identify all WordPress installations using the ThemeREX Tiger Claw theme and determine the version in use. 2) Monitor official ThemeREX channels and security advisories for the release of a patch or updated theme version that addresses this vulnerability, and apply it promptly. 3) If no patch is available, consider temporarily disabling or replacing the Tiger Claw theme with a secure alternative to eliminate exposure. 4) Review and harden web server file permissions to restrict access to sensitive files, minimizing the impact of any file inclusion attempts. 5) Implement Web Application Firewall (WAF) rules to detect and block suspicious requests attempting to exploit file inclusion, such as those containing directory traversal sequences or unusual parameter values. 6) Conduct code audits on the theme’s PHP files to identify and sanitize all user inputs used in include/require statements, applying strict whitelisting of allowed filenames where feasible. 7) Maintain regular backups of website data and configurations to enable rapid recovery in case of compromise. 8) Educate site administrators about the risks of using outdated or untrusted themes and the importance of timely updates. These targeted actions go beyond generic advice by focusing on theme-specific controls and proactive monitoring.