CVE-2025-27362: Petito Theme LFI Vulnerability

CVE-2025-27362 Overview

CVE-2025-27362 is a PHP Local File Inclusion (LFI) vulnerability affecting the BZOTheme Petito WordPress theme (bw-petito). The vulnerability stems from improper control of filename parameters used in PHP include/require statements, allowing attackers to include arbitrary local files from the server's filesystem. This can lead to sensitive information disclosure, configuration file exposure, and potentially remote code execution when combined with other attack techniques.

Critical Impact

This vulnerability enables unauthenticated attackers to read sensitive files from WordPress installations, potentially exposing database credentials, configuration secrets, and other critical system information.

Affected Products

• BZOTheme Petito WordPress Theme versions prior to 1.6.6
• WordPress installations using the vulnerable bw-petito theme

Discovery Timeline

• 2025-06-09 - CVE CVE-2025-27362 published to NVD
• 2026-04-23 - Last updated in NVD database

Technical Details for CVE-2025-27362

Vulnerability Analysis

This vulnerability is classified under CWE-98 (Improper Control of Filename for Include/Require Statement in PHP Program). The Petito WordPress theme fails to properly validate and sanitize user-controlled input before passing it to PHP's include() or require() functions. This allows an attacker to manipulate file path parameters to traverse directories and include arbitrary local files.

The network-accessible attack vector means this vulnerability can be exploited remotely by any attacker who can reach the WordPress installation. While the attack complexity is high, successful exploitation requires no authentication or user interaction, making it a significant risk for public-facing WordPress sites.

Root Cause

The root cause of this vulnerability lies in insufficient input validation within the Petito theme's PHP code. When processing user-supplied data that influences file inclusion operations, the theme fails to:

1. Properly sanitize directory traversal sequences (e.g., ../)
2. Validate that requested files exist within an expected directory
3. Implement allowlisting for permitted file inclusions
4. Use secure coding practices for dynamic file operations

Attack Vector

The vulnerability is exploitable over the network without authentication. An attacker can craft malicious requests containing directory traversal sequences to escape the intended directory context and access sensitive files on the server. Common targets include:

• WordPress configuration file (wp-config.php) containing database credentials
• System files like /etc/passwd for user enumeration
• Log files that may contain sensitive information
• Other PHP files that could be leveraged for code execution

The attack typically involves manipulating URL parameters or POST data that the vulnerable theme uses to dynamically include files. For detailed technical information about the exploitation mechanism, refer to the Patchstack Vulnerability Report.

Detection Methods for CVE-2025-27362

Indicators of Compromise

• Unusual HTTP requests containing directory traversal patterns (../, ..%2F, %2e%2e/) targeting theme files
• Web server logs showing attempts to access sensitive files like wp-config.php or /etc/passwd
• Requests with encoded path traversal sequences targeting the Petito theme directory
• Unexpected file access patterns in PHP error logs

Detection Strategies

• Implement web application firewall (WAF) rules to detect and block path traversal attempts
• Monitor HTTP request logs for suspicious patterns targeting the bw-petito theme directory
• Deploy file integrity monitoring on critical WordPress configuration files
• Enable PHP error logging and monitor for failed file inclusion attempts

Monitoring Recommendations

• Configure real-time alerting for requests containing path traversal sequences
• Establish baseline behavior for theme file access and alert on anomalies
• Monitor for unauthorized access to sensitive configuration files
• Implement honeypot files to detect active exploitation attempts

How to Mitigate CVE-2025-27362

Immediate Actions Required

• Update the BZOTheme Petito theme to version 1.6.6 or later immediately
• Audit WordPress installations for the presence of vulnerable theme versions
• Review web server access logs for evidence of exploitation attempts
• Consider temporarily disabling the theme if patching is not immediately possible

Patch Information

The vulnerability has been addressed in Petito theme version 1.6.6. WordPress administrators should update to this version or later through the WordPress dashboard or by manually replacing theme files. For complete patch details and update instructions, consult the Patchstack vulnerability database entry.

Workarounds

• Implement a Web Application Firewall (WAF) rule to block requests containing path traversal patterns targeting theme files
• Restrict PHP's open_basedir to limit file system access to the WordPress installation directory
• Apply file system permissions to prevent the web server from reading sensitive files outside the web root
• Consider switching to an alternative WordPress theme until the update can be applied

# Example: Restrict PHP open_basedir in Apache configuration
<Directory /var/www/html/wordpress>
    php_admin_value open_basedir "/var/www/html/wordpress:/tmp"
</Directory>