CVE-2025-67938: Biagiotti PHP File Inclusion Vulnerability

CVE-2025-67938 Overview

CVE-2025-67938 is a PHP Local File Inclusion (LFI) vulnerability affecting the Biagiotti WordPress theme developed by Mikado-Themes. The vulnerability stems from improper control of filename parameters used in PHP include/require statements, classified under CWE-98 (Improper Control of Filename for Include/Require Statement in PHP Program).

This vulnerability allows attackers to manipulate file path parameters to include arbitrary local files from the server's filesystem. When exploited, attackers can potentially read sensitive configuration files, access credentials stored in PHP files, or chain this vulnerability with other techniques to achieve remote code execution.

Critical Impact

Attackers can leverage this Local File Inclusion vulnerability to read sensitive server files, potentially exposing database credentials, configuration data, and other confidential information stored on the web server.

Affected Products

• Mikado-Themes Biagiotti WordPress Theme versions prior to 3.5.2
• WordPress installations using vulnerable Biagiotti theme versions
• Web servers hosting affected WordPress sites

Discovery Timeline

• 2026-01-22 - CVE CVE-2025-67938 published to NVD
• 2026-01-22 - Last updated in NVD database

Technical Details for CVE-2025-67938

Vulnerability Analysis

This vulnerability exists due to insufficient input validation in the Biagiotti WordPress theme when processing user-controlled input that gets passed to PHP's include() or require() functions. The theme fails to properly sanitize or validate file path parameters, allowing attackers to traverse directories and include arbitrary files from the local filesystem.

Local File Inclusion vulnerabilities in WordPress themes are particularly dangerous because WordPress installations often contain sensitive configuration files like wp-config.php which stores database credentials and authentication keys. An attacker exploiting this vulnerability could potentially access these files and gain further access to the underlying infrastructure.

The vulnerability is categorized as CWE-98, which specifically addresses situations where PHP applications fail to properly control filenames used in include/require statements, making them susceptible to file inclusion attacks.

Root Cause

The root cause of this vulnerability is the improper handling of user-supplied input when constructing file paths for PHP include or require operations. The Biagiotti theme does not implement adequate input validation, sanitization, or whitelisting of allowed files before including them. This allows attackers to inject path traversal sequences (such as ../) or directly specify sensitive file paths that the application then includes and potentially executes.

Attack Vector

The attack vector for this LFI vulnerability involves manipulating request parameters that are passed to vulnerable file inclusion functions within the theme. An attacker can craft malicious requests containing path traversal sequences to navigate outside the intended directory and access sensitive files on the server.

Typical exploitation scenarios include:

• Reading sensitive configuration files such as wp-config.php or /etc/passwd
• Accessing log files that may contain sensitive information
• Including files with attacker-controlled content (if upload functionality exists) to achieve code execution
• Chaining with other vulnerabilities for greater impact

The vulnerability affects the Biagiotti theme in versions prior to 3.5.2, where the fix was implemented to address this security issue. For detailed technical information about this vulnerability, refer to the Patchstack security advisory.

Detection Methods for CVE-2025-67938

Indicators of Compromise

• Unusual file access patterns in web server logs showing path traversal sequences (../, ..%2f, etc.)
• HTTP requests containing file paths to sensitive system files like /etc/passwd or wp-config.php
• Anomalous requests to theme-related endpoints with file path parameters
• Evidence of unauthorized file reads in application logs

Detection Strategies

• Implement Web Application Firewall (WAF) rules to detect and block path traversal patterns in requests
• Monitor web server access logs for requests containing directory traversal sequences targeting theme files
• Deploy file integrity monitoring on sensitive configuration files to detect unauthorized access attempts
• Use runtime application self-protection (RASP) solutions to detect LFI exploitation attempts

Monitoring Recommendations

• Enable verbose logging on WordPress installations to capture detailed request information
• Set up alerting for access attempts to sensitive files from web application contexts
• Monitor for suspicious file read operations originating from PHP processes
• Regularly audit web server logs for path traversal attack patterns

How to Mitigate CVE-2025-67938

Immediate Actions Required

• Update the Biagiotti WordPress theme to version 3.5.2 or later immediately
• Review web server and application logs for signs of exploitation attempts
• Temporarily disable the Biagiotti theme if immediate patching is not possible
• Audit WordPress configuration files to ensure no unauthorized access has occurred
• Consider implementing additional WAF rules to block LFI attack patterns

Patch Information

Mikado-Themes has addressed this vulnerability in Biagiotti theme version 3.5.2. Administrators should update to this version or later through the WordPress theme update mechanism or by downloading the patched version directly from the theme vendor. For additional details, consult the Patchstack vulnerability database.

Workarounds

• Implement strict input validation at the web server level using ModSecurity or similar WAF solutions to block path traversal attempts
• Configure PHP's open_basedir directive to restrict file system access to the web root directory
• Disable the vulnerable theme and switch to an alternative theme until patching is possible
• Apply network-level access controls to limit exposure of the WordPress installation

# Example ModSecurity rule to block path traversal attempts
SecRule REQUEST_URI|ARGS|REQUEST_BODY "@contains ../" \
    "id:1001,phase:2,deny,status:403,msg:'Path traversal attempt blocked'"

# Example PHP open_basedir configuration in php.ini
# open_basedir = /var/www/html/:/tmp/