CVE-2025-14804: WordPress File Manager Path Traversal Flaw

CVE-2025-14804 Overview

The Frontend File Manager Plugin for WordPress versions prior to 23.5 contains an arbitrary file deletion vulnerability that allows authenticated users to delete files from the server without proper authorization. The vulnerability exists due to insufficient validation of a path parameter and lack of ownership verification, enabling users with minimal privileges (such as subscribers) to remove critical files from the web server.

Critical Impact

Authenticated users with low-level privileges can delete arbitrary files on the server, potentially leading to complete site takeover, denial of service, or removal of security controls.

Affected Products

• Frontend File Manager Plugin for WordPress (versions before 23.5)

Discovery Timeline

• 2026-01-07 - CVE-2025-14804 published to NVD
• 2026-01-08 - Last updated in NVD database

Technical Details for CVE-2025-14804

Vulnerability Analysis

This vulnerability is classified as Path Traversal combined with Broken Access Control. The Frontend File Manager Plugin fails to properly sanitize user-supplied path parameters and does not verify file ownership before processing deletion requests. This architectural flaw enables any authenticated WordPress user, regardless of their role or permission level, to manipulate the file path parameter and delete arbitrary files on the server.

The lack of input validation on the path parameter allows attackers to use directory traversal sequences to escape the intended upload directory and target sensitive system files. Additionally, the absence of ownership checks means users can delete files they did not upload and have no legitimate access to.

Root Cause

The root cause of this vulnerability lies in two critical security oversights in the plugin's file deletion functionality:

1. Improper Input Validation: The plugin does not sanitize or validate the path parameter passed to the file deletion function, allowing directory traversal characters (e.g., ../) to be processed.

2. Missing Authorization Checks: The plugin fails to verify that the requesting user has ownership or appropriate permissions for the file being deleted. Any authenticated user, including those with the lowest subscriber role, can invoke the deletion functionality.

Attack Vector

The attack is network-based and requires only low-privilege authentication to exploit. An attacker with a valid WordPress subscriber account can craft malicious requests to the vulnerable endpoint, manipulating the path parameter to target files outside the intended directory structure.

Potential attack scenarios include:

• Deleting the wp-config.php file to cause a denial of service or force WordPress into setup mode
• Removing security plugins or .htaccess files to weaken server defenses
• Deleting backup files to prevent recovery after a subsequent attack
• Removing log files to cover tracks of malicious activity

The vulnerability requires no user interaction and can be exploited directly through HTTP requests to the affected endpoint.

Detection Methods for CVE-2025-14804

Indicators of Compromise

• Unexpected file deletions in WordPress core directories or uploads folder
• Presence of directory traversal patterns (../) in web server access logs
• Missing wp-config.php, .htaccess, or other critical configuration files
• Unusual activity from low-privilege WordPress user accounts
• POST requests to Frontend File Manager endpoints with suspicious path parameters

Detection Strategies

• Monitor web server logs for requests containing path traversal sequences targeting the Frontend File Manager plugin endpoints
• Implement file integrity monitoring (FIM) to detect unauthorized deletions of critical WordPress files
• Configure WordPress security plugins to alert on subscriber-level users accessing file management functions
• Review WordPress user activity logs for file operations performed by accounts with minimal privileges

Monitoring Recommendations

• Enable detailed access logging for the wp-content/plugins/frontend-file-manager/ directory
• Set up real-time alerts for deletion of critical files such as wp-config.php, .htaccess, and plugin files
• Monitor for unusual patterns of file system changes, particularly from web server processes
• Implement SentinelOne Singularity Platform for comprehensive endpoint detection and response capabilities

How to Mitigate CVE-2025-14804

Immediate Actions Required

• Update Frontend File Manager Plugin to version 23.5 or later immediately
• Review WordPress user accounts and remove unnecessary subscriber or low-privilege accounts
• Audit file system for any unexpected deletions or modifications
• Consider temporarily disabling the plugin if an immediate update is not possible
• Implement additional access controls at the web server level to restrict file operations

Patch Information

The vulnerability is addressed in Frontend File Manager Plugin version 23.5 and later. Site administrators should update to the latest version through the WordPress plugin dashboard or by downloading the patched version directly from the WordPress plugin repository. For detailed information about this vulnerability, refer to the WPScan Vulnerability Report.

Workarounds

• Restrict plugin access to only trusted administrator accounts by modifying plugin permissions
• Implement web application firewall (WAF) rules to block requests containing directory traversal patterns
• Use file system permissions to make critical files immutable or read-only at the operating system level
• Disable the file deletion functionality within the plugin settings if available
• Monitor and restrict the capabilities of subscriber-level WordPress accounts

# Protect critical WordPress files with restrictive permissions
chmod 400 wp-config.php
chattr +i wp-config.php  # Make file immutable (Linux)

# Block directory traversal in .htaccess
RewriteEngine On
RewriteCond %{QUERY_STRING} (\.\./|\.\.) [NC]
RewriteRule .* - [F,L]