CVE-2026-66586 in WP Cafe Pro Plugin
Summary
by MITRE • 08/20/2026
Author Local File Inclusion in WP Cafe Pro < 3.0.15 versions.
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Analysis
by VulDB Data Team • 08/20/2026
The vulnerability identified as Author Local File Inclusion in the WP Cafe Pro plugin, affecting versions prior to 3.0.15, represents a critical security flaw rooted in insufficient input validation and sanitization of user-supplied data within the WordPress ecosystem. This specific type of vulnerability allows an attacker to manipulate file inclusion mechanisms by supplying maliciously crafted parameters that reference files on the server's local filesystem rather than intended script resources. In the context of web application architecture, this typically occurs when a PHP function such as include or require processes input from sources like GET, POST, or COOKIE superglobals without adequate verification against an allowlist of expected values. The flaw exploits the trust placed in user inputs by developers who may assume that standard WordPress security measures are sufficient to prevent path traversal attacks, thereby creating a gateway for unauthorized access to sensitive system files.
From a technical perspective, this vulnerability is classified under CWE-98 Improper Control of Filename for Include Statement within the Common Weakness Enumeration framework. It aligns with the ATT&CK technique T1059 Command and Scripting Interpreter, specifically through file inclusion vectors that can lead to remote code execution if an attacker manages to include a PHP shell or other executable script stored on the server. The operational impact of this flaw is severe because it bypasses authentication requirements in many configurations, allowing unauthenticated attackers to read arbitrary files from the web server's directory structure. This capability enables the extraction of sensitive information such as database configuration files containing credentials, user session data, password hashes for administrative accounts, and core WordPress source code which can be further analyzed to identify additional vulnerabilities.
The exploitation mechanism generally involves constructing a URL with specific parameters that point to absolute or relative paths outside the intended plugin directory. For instance, an attacker might attempt to include /etc/passwd on Linux systems or wp-config.php within the WordPress installation root to gain initial foothold and credential access. Once critical configuration files are accessed, the attacker can derive database passwords which may provide broader network access if those credentials are reused across other services. Furthermore, in environments where file upload capabilities exist elsewhere in the application, this vulnerability could be leveraged as part of a multi-stage attack chain to achieve full remote code execution by including uploaded malicious scripts.
Mitigation strategies for this vulnerability require immediate action from site administrators and developers. The primary remediation is to upgrade WP Cafe Pro to version 3.0.15 or later where the issue has been addressed through proper input validation, output encoding, and strict file path handling practices such as using realpath checks to ensure included files reside within expected directories. For sites unable to update immediately due to compatibility concerns, temporary mitigations include restricting web server access to sensitive configuration files via .htaccess rules or Nginx configurations, disabling PHP execution in upload directories if applicable, and implementing a Web Application Firewall that can detect and block common file inclusion patterns based on known attack signatures. Regular security audits and adherence to secure coding standards are essential to prevent similar flaws from being introduced into WordPress plugins in the future.