CVE-2025-46468: Fable Extra Path Traversal Vulnerability

CVE-2025-46468 Overview

CVE-2025-46468 is a Local File Inclusion (LFI) vulnerability in the WPFable Fable Extra WordPress plugin. The vulnerability arises from improper control of filename for include/require statements in PHP, allowing attackers to include arbitrary local files on the server. This flaw enables unauthenticated remote attackers to potentially read sensitive configuration files, access credentials, or chain with other vulnerabilities for remote code execution.

Critical Impact

Unauthenticated attackers can exploit this Local File Inclusion vulnerability to read sensitive server files, potentially leading to full system compromise through credential theft or code execution via log poisoning techniques.

Affected Products

• WPFable Fable Extra plugin versions through 1.0.6
• WordPress installations using vulnerable Fable Extra plugin versions
• Sites using Fable theme with Fable Extra companion plugin

Discovery Timeline

• 2025-05-23 - CVE-2025-46468 published to NVD
• 2025-05-23 - Last updated in NVD database

Technical Details for CVE-2025-46468

Vulnerability Analysis

This vulnerability is classified under CWE-98 (Improper Control of Filename for Include/Require Statement in PHP Program). The Fable Extra plugin fails to properly sanitize user-controlled input before using it in PHP include() or require() statements. This allows an attacker to manipulate file paths and include arbitrary local files from the server's filesystem.

The attack can be executed remotely over the network without requiring any authentication or user interaction. Successful exploitation grants attackers full access to read sensitive files, potentially exposing database credentials from wp-config.php, user data, and other confidential information stored on the server.

Root Cause

The root cause of this vulnerability is insufficient input validation and sanitization in the Fable Extra plugin's file handling mechanisms. The plugin accepts user-supplied input that directly influences which PHP files are included during execution. Without proper path traversal filtering or whitelist validation, attackers can inject directory traversal sequences (such as ../) or absolute paths to access files outside the intended directory scope.

Attack Vector

The attack is network-based and requires no privileges or user interaction. An attacker can craft malicious HTTP requests targeting the vulnerable plugin endpoint, manipulating parameters that control file inclusion. Common exploitation techniques include:

Path Traversal: Using sequences like ../../../etc/passwd to escape the web directory and access system files.

WordPress Configuration Access: Targeting ../../../wp-config.php to extract database credentials, authentication keys, and other sensitive configuration data.

Log Poisoning: When combined with access to writable log files, attackers can inject PHP code into logs and then include them to achieve remote code execution.

For detailed technical information about this vulnerability, refer to the Patchstack WordPress Vulnerability Report.

Detection Methods for CVE-2025-46468

Indicators of Compromise

• HTTP requests containing path traversal sequences (../, ..%2f, ..%252f) targeting Fable Extra plugin endpoints
• Access log entries showing attempts to access /wp-content/plugins/fable-extra/ with unusual parameters
• Unexpected reads of sensitive files like wp-config.php, /etc/passwd, or log files
• Evidence of PHP code appearing in web server access or error logs

Detection Strategies

• Monitor web application firewall (WAF) logs for path traversal attack patterns targeting WordPress plugin directories
• Implement file integrity monitoring on critical WordPress configuration files
• Deploy intrusion detection rules to alert on suspicious include patterns in HTTP requests
• Review PHP error logs for file inclusion warnings or unexpected file access attempts

Monitoring Recommendations

• Enable verbose logging for the WordPress wp-content/plugins/ directory
• Configure real-time alerting for any access attempts to wp-config.php from non-standard processes
• Monitor for anomalous file read operations originating from the web server process
• Implement network-level monitoring for data exfiltration patterns following potential LFI exploitation

How to Mitigate CVE-2025-46468

Immediate Actions Required

• Immediately deactivate the Fable Extra plugin if running version 1.0.6 or earlier
• Review web server and WordPress access logs for indicators of exploitation attempts
• Rotate all credentials stored in wp-config.php including database passwords and authentication keys
• Implement a web application firewall (WAF) rule to block path traversal patterns in requests to the plugin

Patch Information

As of the CVE publication date, no official patch has been confirmed. Website administrators should monitor the WordPress plugin repository and the Patchstack vulnerability database for updates. Consider removing the vulnerable plugin entirely until a security update is released by WPFable.

Workarounds

• Disable the Fable Extra plugin entirely until a patched version is available
• Implement strict WAF rules to filter requests containing directory traversal patterns (../, encoded variants)
• Use PHP open_basedir configuration to restrict file access to the WordPress installation directory
• Apply principle of least privilege to web server file permissions, ensuring the web process cannot read sensitive system files

# Configuration example - Restrict PHP open_basedir in php.ini or .htaccess
# Add to php.ini:
open_basedir = /var/www/html/wordpress:/tmp

# Or add to .htaccess for Apache with mod_php:
php_admin_value open_basedir "/var/www/html/wordpress:/tmp"

# Nginx with PHP-FPM - add to pool configuration:
# php_admin_value[open_basedir] = /var/www/html/wordpress:/tmp