CVE-2025-39544 Overview
CVE-2025-39544 is a Cross-Site Request Forgery (CSRF) vulnerability in the WP Tools WordPress plugin (wptools) developed by sminozzi. This vulnerability allows attackers to exploit CSRF weaknesses to perform Path Traversal attacks, potentially leading to arbitrary file deletion on affected WordPress installations. The vulnerability affects WP Tools versions up to and including 5.18.
Critical Impact
Attackers can leverage this CSRF vulnerability to perform path traversal attacks, potentially deleting arbitrary files on the WordPress server, which could lead to complete site compromise or denial of service.
Affected Products
- WP Tools WordPress Plugin versions up to and including 5.18
- WordPress installations with the vulnerable WP Tools plugin installed
Discovery Timeline
- April 16, 2025 - CVE-2025-39544 published to NVD
- April 15, 2026 - Last updated in NVD database
Technical Details for CVE-2025-39544
Vulnerability Analysis
This vulnerability combines two distinct attack vectors: Cross-Site Request Forgery (CSRF) and Path Traversal. The WP Tools plugin fails to properly implement CSRF protection tokens (nonce verification) on sensitive file operations, allowing an attacker to craft malicious requests that execute in the context of an authenticated administrator's session.
When combined with the path traversal weakness, attackers can manipulate file path parameters to escape the intended directory structure and target arbitrary files on the server. This chained attack can result in the deletion of critical WordPress files, configuration files, or system files accessible to the web server process.
The vulnerability is particularly dangerous because it requires no prior authentication on the attacker's part—they only need to trick an authenticated WordPress administrator into visiting a malicious page or clicking a crafted link while logged into their WordPress dashboard.
Root Cause
The root cause of this vulnerability lies in two security failures within the WP Tools plugin:
Missing CSRF Token Validation: The plugin does not properly verify WordPress nonces on file operation endpoints, allowing cross-origin requests to execute privileged actions without verification that the request originated from a legitimate admin action.
Insufficient Path Sanitization: User-supplied file path parameters are not adequately sanitized to prevent directory traversal sequences (such as ../) from escaping the intended directory boundaries.
Attack Vector
The attack requires social engineering to succeed. An attacker constructs a malicious HTML page containing a hidden form or JavaScript that automatically submits a crafted request to the vulnerable WP Tools endpoint. The request includes path traversal sequences to target files outside the intended directory.
When an authenticated WordPress administrator visits the attacker's page (through phishing, malicious advertisements, or compromised websites), the malicious request is sent to the WordPress site with the administrator's session cookies attached. Without proper CSRF protection, the server processes the request as legitimate, executing the file deletion operation.
The vulnerability mechanism involves crafting HTTP requests that target file operation endpoints in WP Tools without proper nonce verification. By including path traversal sequences in the file path parameter, attackers can target files outside the intended plugin directories. For detailed technical information, refer to the Patchstack WordPress Vulnerability Report.
Detection Methods for CVE-2025-39544
Indicators of Compromise
- Unexpected file deletions on the WordPress server, particularly core WordPress files or wp-config.php
- Web server access logs showing POST requests to WP Tools endpoints with path traversal sequences (../ patterns)
- Missing plugin or theme files that were not intentionally removed
- WordPress error messages indicating missing critical files
Detection Strategies
- Monitor web server access logs for requests containing directory traversal patterns targeting WP Tools plugin endpoints
- Implement Web Application Firewall (WAF) rules to detect and block requests containing path traversal sequences
- Enable file integrity monitoring to alert on unexpected file modifications or deletions
- Review referer headers in logs for suspicious external domains making requests to WordPress admin endpoints
Monitoring Recommendations
- Deploy file integrity monitoring solutions to track changes to critical WordPress files and directories
- Configure alerting for any file deletion operations initiated through plugin endpoints
- Monitor for HTTP requests with unusual referer headers combined with file operation parameters
- Implement logging for all administrative actions within WordPress, including plugin operations
How to Mitigate CVE-2025-39544
Immediate Actions Required
- Update WP Tools plugin to a patched version greater than 5.18 when available
- Temporarily deactivate the WP Tools plugin if no patch is available and the functionality is not critical
- Implement WAF rules to block requests containing path traversal patterns to the WordPress installation
- Review WordPress file integrity and restore any deleted files from backups
Patch Information
Users should monitor the WordPress plugin repository and the Patchstack WordPress Vulnerability Report for updates on patched versions. The fix should implement proper WordPress nonce verification on all file operation endpoints and sanitize file path inputs to prevent directory traversal.
Workarounds
- Restrict access to the WordPress admin dashboard to trusted IP addresses only using .htaccess or server-level firewall rules
- Implement additional CSRF protection at the web server level using security headers like SameSite cookies
- Consider using a WordPress security plugin that provides CSRF and path traversal protection
- Educate administrators about phishing risks and avoiding clicking unknown links while logged into WordPress
# Example .htaccess configuration to restrict admin access
<Files wp-login.php>
Order Deny,Allow
Deny from all
Allow from 192.168.1.0/24
Allow from YOUR.TRUSTED.IP.ADDRESS
</Files>
<Directory "/var/www/html/wp-admin">
Order Deny,Allow
Deny from all
Allow from 192.168.1.0/24
Allow from YOUR.TRUSTED.IP.ADDRESS
</Directory>
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
