CVE-2025-3300 Overview
CVE-2025-3300 is a directory traversal vulnerability in the WPMasterToolKit (WPMTK) – All in one plugin for WordPress. The flaw affects all plugin versions up to and including 2.5.2. Authenticated users with Administrator-level access or above can exploit the issue to read and modify arbitrary files on the underlying server. The vulnerability is classified under [CWE-22] (Improper Limitation of a Pathname to a Restricted Directory). Successful exploitation can expose sensitive configuration data, credentials, and other server-side secrets, and can be chained to achieve remote code execution by modifying critical PHP files.
Critical Impact
Authenticated administrators can read and write arbitrary files on the host server, enabling sensitive data exposure and potential takeover of the WordPress installation.
Affected Products
- WPMasterToolKit (WPMTK) – All in one WordPress plugin versions <= 2.5.2
- WordPress installations using the WPMasterToolKit plugin
- Hosting environments running vulnerable WPMasterToolKit deployments
Discovery Timeline
- 2025-04-24 - CVE-2025-3300 published to NVD
- 2026-06-17 - Last updated in NVD database
Technical Details for CVE-2025-3300
Vulnerability Analysis
The WPMasterToolKit plugin fails to properly sanitize file path parameters supplied to file-handling functions used by administrative features. An authenticated attacker with Administrator privileges can supply traversal sequences such as ../ in a path parameter. The plugin then resolves the manipulated path outside the intended plugin directory, granting access to arbitrary files on the filesystem.
Because both read and write operations are exposed, the impact extends beyond information disclosure. An attacker can overwrite PHP source files within the WordPress installation, including theme and core configuration files such as wp-config.php. Modifying these files can result in arbitrary code execution under the web server context. The EPSS probability of 0.826% reflects measurable interest, consistent with administrator-required exploitation prerequisites.
Root Cause
The root cause is the absence of canonicalization and allowlist validation on user-controlled file path inputs in the plugin's administrative file operations. The plugin trusts the supplied path and concatenates it with a base directory without rejecting .. segments or normalizing the final path against an expected directory boundary.
Attack Vector
Exploitation requires a network-reachable WordPress instance and valid Administrator credentials. The attacker submits an HTTP request to the affected plugin endpoint with a path parameter containing directory traversal sequences. The plugin processes the request and performs the requested read or write operation on the resolved path. No user interaction is required beyond the authenticated session.
The vulnerability is documented in the Wordfence Vulnerability Report and the corresponding WordPress Plugin Change Log.
Detection Methods for CVE-2025-3300
Indicators of Compromise
- HTTP requests to WPMasterToolKit administrative endpoints containing ../ or URL-encoded %2e%2e%2f sequences in path parameters
- Unexpected modifications to PHP files outside the plugin directory, particularly wp-config.php, theme files, or mu-plugins content
- Access log entries showing administrator sessions reading sensitive files such as /etc/passwd, wp-config.php, or backup archives
- Newly created PHP files in upload or media directories shortly after WPMasterToolKit endpoint activity
Detection Strategies
- Inspect web server access logs for requests targeting WPMasterToolKit endpoints with traversal patterns in query strings or POST bodies
- Deploy file integrity monitoring on WordPress core, theme, and plugin directories to flag unauthorized writes
- Correlate administrator authentication events with subsequent file system changes outside the plugin's working directory
- Use Web Application Firewall (WAF) rules that detect path traversal payloads against /wp-admin/ requests
Monitoring Recommendations
- Enable WordPress audit logging plugins to capture administrator-initiated file operations
- Forward web server and PHP error logs to a centralized SIEM for retention and correlation
- Alert on creation or modification of executable PHP files within wp-content/uploads/ or similar non-code directories
- Monitor outbound connections from the web server process that follow file modification events, which may indicate webshell installation
How to Mitigate CVE-2025-3300
Immediate Actions Required
- Update the WPMasterToolKit plugin to the latest patched version above 2.5.2 as published on the WordPress Plugin page
- Audit all WordPress Administrator accounts and remove unused or shared privileged accounts
- Enforce multi-factor authentication on all WordPress Administrator logins to reduce credential compromise risk
- Review file integrity of WordPress core, themes, and plugins for unauthorized modifications since the plugin was installed
Patch Information
The vendor addressed the directory traversal flaw in a release subsequent to 2.5.2. Refer to the WordPress Plugin Change Log for the specific changeset that introduces path validation. Administrators should apply the update through the WordPress plugin dashboard or by replacing plugin files manually from the official repository.
Workarounds
- Temporarily deactivate the WPMasterToolKit plugin until the patched version is applied
- Restrict access to /wp-admin/ using IP allowlists at the web server or WAF layer
- Configure WAF rules to block requests containing ../, ..\, or encoded traversal sequences against plugin endpoints
- Run the web server process under a least-privilege account that cannot modify WordPress core files or write to system directories
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
