CVE-2026-2419: WP-DownloadManager Path Traversal Flaw

CVE-2026-2419 Overview

The WP-DownloadManager plugin for WordPress contains a Path Traversal vulnerability (CWE-22) in all versions up to and including 1.69. The vulnerability exists in the download_path configuration parameter due to insufficient validation of the download path setting, which allows directory traversal sequences to bypass the WP_CONTENT_DIR prefix check. This flaw enables authenticated attackers with Administrator-level access and above to configure the plugin to list and access arbitrary files on the server by exploiting the file browser functionality.

Critical Impact

Authenticated attackers with administrative privileges can read sensitive files outside the intended WordPress content directory, potentially exposing configuration files, credentials, and other sensitive server data.

Affected Products

• WP-DownloadManager plugin for WordPress versions up to and including 1.69

Discovery Timeline

• February 18, 2026 - CVE-2026-2419 published to NVD
• February 18, 2026 - Last updated in NVD database

Technical Details for CVE-2026-2419

Vulnerability Analysis

This Path Traversal vulnerability stems from improper input validation in the WP-DownloadManager plugin's configuration handling. The plugin attempts to restrict file access to the WordPress content directory by enforcing a WP_CONTENT_DIR prefix check. However, the validation logic fails to properly sanitize directory traversal sequences (such as ../) within the download_path parameter.

When an administrator configures the download path setting, the plugin's file browser functionality does not adequately normalize or validate the path before using it. This allows an attacker to craft a path that technically begins with the expected prefix but includes traversal sequences that escape the intended directory boundary. The consequence is unauthorized read access to arbitrary files on the server's filesystem.

The attack requires authenticated administrative access, which limits the attack surface but still presents a significant risk in scenarios involving compromised admin accounts, malicious insiders, or multi-tenant WordPress installations where administrators of different sites share infrastructure.

Root Cause

The root cause is insufficient input validation in the download-options.php file, specifically at the path validation logic around line 42. The implementation fails to properly canonicalize the path and remove directory traversal sequences before comparing it against the allowed base directory. A secure implementation should use path canonicalization functions to resolve the absolute path and verify it remains within the permitted directory after all traversal sequences are resolved.

Attack Vector

The attack is carried out over the network by an authenticated administrator who manipulates the download_path configuration parameter. The attacker can inject directory traversal sequences (e.g., ../../) that bypass the WP_CONTENT_DIR prefix validation. Once the path is set to point outside the content directory, the plugin's file browser functionality can be used to enumerate and read arbitrary files accessible by the web server process.

The vulnerability exploitation flow involves:

1. Authenticating to WordPress with administrator privileges
2. Navigating to the WP-DownloadManager plugin settings
3. Modifying the download_path parameter to include traversal sequences
4. Using the plugin's file browser to list and access files outside the intended directory

Detection Methods for CVE-2026-2419

Indicators of Compromise

• Unusual modifications to the WP-DownloadManager plugin configuration, particularly the download_path setting
• Log entries showing access to files outside the WordPress content directory via the plugin
• Configuration values containing directory traversal sequences (../ or ..\)
• Unexpected file access patterns from the WordPress application to sensitive system files

Detection Strategies

• Monitor WordPress options table for changes to WP-DownloadManager settings containing path traversal patterns
• Implement file integrity monitoring on sensitive configuration files (wp-config.php, /etc/passwd, etc.)
• Review web server access logs for requests to the download manager that result in reading files outside wp-content
• Deploy Web Application Firewall (WAF) rules to detect path traversal patterns in plugin configuration requests

Monitoring Recommendations

• Enable detailed audit logging for WordPress administrator actions, particularly plugin configuration changes
• Configure alerting for any file read operations by the web server process targeting sensitive system directories
• Implement regular plugin configuration audits to detect unauthorized changes to download paths
• Monitor for bulk file enumeration activity through the plugin's file browser interface

How to Mitigate CVE-2026-2419

Immediate Actions Required

• Update WP-DownloadManager to the latest patched version immediately
• Review current download_path configuration for any traversal sequences and reset to default if compromised
• Audit administrator account activity for any suspicious configuration changes
• Restrict administrative access to trusted users only and implement strong authentication controls

Patch Information

A security patch has been released addressing this vulnerability. The fix is available in the GitHub commit 416b9f5, which implements proper path validation to prevent directory traversal attacks. Users should update to the latest version of the plugin available through the WordPress plugin repository.

Additional technical details are available in the Wordfence Vulnerability Analysis and the WordPress Plugin Tag Reference.

Workarounds

• Temporarily disable the WP-DownloadManager plugin until a patch can be applied
• Implement server-level access controls to restrict the web server process from reading sensitive files outside the web root
• Use a Web Application Firewall (WAF) to block requests containing directory traversal patterns
• Limit administrator access to only essential personnel and enforce multi-factor authentication for all admin accounts
• Consider using file system permissions to restrict access to sensitive files from the web server user account

# Configuration example: Restrict file permissions on sensitive files
chmod 600 /etc/passwd
chmod 600 /path/to/wordpress/wp-config.php

# Apache configuration to block path traversal attempts
# Add to .htaccess or virtual host configuration
<Directory "/var/www/html/wordpress">
    AllowOverride None
    Require all granted
    
    # Block requests containing path traversal sequences
    RewriteEngine On
    RewriteCond %{QUERY_STRING} \.\./ [NC]
    RewriteRule .* - [F,L]
</Directory>