CVE-2025-12550: OchaHouse PHP File Inclusion Vulnerability

CVE-2025-12550 Overview

CVE-2025-12550 is a critical PHP Local File Inclusion (LFI) vulnerability affecting the OchaHouse WordPress theme developed by jwsthemes. The vulnerability stems from improper control of filename parameters used in PHP include/require statements, allowing attackers to include arbitrary local files on the target server. This flaw can be exploited remotely without authentication, potentially leading to sensitive information disclosure, configuration file exposure, and in some scenarios, remote code execution through log poisoning or other LFI-to-RCE techniques.

Critical Impact

Unauthenticated attackers can exploit this vulnerability to read sensitive files from the server, potentially exposing database credentials, configuration files, and user data. Combined with other techniques, this could lead to full server compromise.

Affected Products

• OchaHouse WordPress Theme versions up to and including 2.2.8
• WordPress installations using vulnerable OchaHouse theme versions
• Web servers hosting affected WordPress sites

Discovery Timeline

• 2026-01-08 - CVE-2025-12550 published to NVD
• 2026-01-08 - Last updated in NVD database

Technical Details for CVE-2025-12550

Vulnerability Analysis

This vulnerability is classified under CWE-98 (Improper Control of Filename for Include/Require Statement in PHP Program). The OchaHouse WordPress theme fails to properly sanitize user-supplied input before using it in PHP file inclusion functions. This allows attackers to manipulate the file path parameter to include arbitrary local files from the server's filesystem.

The vulnerability is particularly dangerous because it requires no authentication and can be exploited remotely over the network. The attack complexity is low, meaning no special conditions or circumstances need to be met for exploitation. Successful exploitation impacts the confidentiality, integrity, and availability of the target system, as attackers can read sensitive files, potentially modify server behavior through included files, and cause service disruptions.

Root Cause

The root cause of this vulnerability lies in insufficient input validation and sanitization in the OchaHouse theme's PHP code. When the theme processes user-controlled input for dynamic file inclusion operations, it fails to:

• Validate that the requested file exists within an expected directory
• Sanitize path traversal sequences (such as ../)
• Implement a whitelist of allowed files for inclusion
• Use proper file path canonicalization before inclusion

This oversight allows malicious actors to craft requests that traverse the directory structure and include files outside the intended scope, such as /etc/passwd, WordPress configuration files, or application logs.

Attack Vector

The attack vector is network-based, allowing remote exploitation without requiring user interaction or prior authentication. An attacker can send specially crafted HTTP requests to a vulnerable WordPress site containing path traversal sequences in parameters consumed by the OchaHouse theme.

A typical attack scenario involves manipulating URL parameters or POST data to include sensitive local files. For example, an attacker might attempt to access system files like /etc/passwd or WordPress configuration files like wp-config.php that contain database credentials.

The vulnerability can be chained with other techniques such as log poisoning (injecting PHP code into log files then including those logs) to achieve remote code execution, significantly escalating the impact beyond simple information disclosure.

Detection Methods for CVE-2025-12550

Indicators of Compromise

• Suspicious HTTP requests containing path traversal sequences (../, ..%2f, %2e%2e/) targeting WordPress theme files
• Access logs showing requests to theme endpoints with unusual file path parameters
• Attempts to access sensitive system files such as /etc/passwd, /etc/shadow, or wp-config.php
• Evidence of log file inclusion attempts in web server access logs
• Unexplained access to theme PHP files with encoded path characters

Detection Strategies

• Deploy Web Application Firewall (WAF) rules to detect and block path traversal patterns in HTTP requests
• Implement file integrity monitoring on WordPress installations to detect unauthorized changes
• Configure SIEM rules to alert on multiple failed file inclusion attempts from the same source
• Monitor web server logs for requests containing directory traversal sequences targeting the OchaHouse theme directory

Monitoring Recommendations

• Enable detailed logging on web servers hosting WordPress with the OchaHouse theme
• Configure alerts for unusual file system access patterns from the web server process
• Implement network-based detection for LFI attack signatures targeting WordPress themes
• Regularly audit access logs for reconnaissance activity targeting vulnerable endpoints

How to Mitigate CVE-2025-12550

Immediate Actions Required

• Update the OchaHouse WordPress theme to a patched version if available from the vendor
• If no patch is available, consider temporarily deactivating the OchaHouse theme and switching to a secure alternative
• Deploy WAF rules to block path traversal attempts targeting WordPress theme endpoints
• Restrict file system permissions to limit the web server's access to sensitive files
• Review web server logs for signs of exploitation attempts

Patch Information

Organizations using the OchaHouse WordPress theme should monitor the Patchstack Vulnerability Report for official patch availability and update guidance. Contact jwsthemes directly for information about security updates addressing this vulnerability.

Workarounds

• Implement strict input validation on all user-controllable parameters at the web server or application level
• Deploy a Web Application Firewall with rules specifically blocking LFI and path traversal attacks
• Use PHP's open_basedir directive to restrict file access to the WordPress directory structure
• Apply the principle of least privilege to web server file system permissions
• Consider using security plugins that provide virtual patching capabilities for WordPress vulnerabilities

# Example: Apache mod_security rule to block path traversal
SecRule REQUEST_URI|ARGS|REQUEST_BODY "@rx (\.\./|\.\.\\)" \
    "id:1001,phase:2,deny,status:403,log,msg:'Path Traversal Attempt Blocked'"

# Example: Restrict PHP open_basedir in php.ini or .htaccess
# php_admin_value open_basedir /var/www/html/wordpress:/tmp