CVE-2025-2636: InstaWP Connect Path Traversal Flaw

CVE-2025-2636 Overview

The InstaWP Connect – 1-click WP Staging & Migration plugin for WordPress contains a critical Local File Inclusion (LFI) vulnerability in all versions up to, and including, 0.1.0.85. The vulnerability exists in the instawp-database-manager parameter, which fails to properly sanitize user input before including files. This allows unauthenticated attackers to include and execute arbitrary files on the server, enabling the execution of any PHP code contained within those files. Attackers can leverage this flaw to bypass access controls, obtain sensitive data, or achieve remote code execution when combined with the ability to upload seemingly "safe" file types such as images.

Critical Impact

Unauthenticated attackers can achieve remote code execution on vulnerable WordPress installations by exploiting this Local File Inclusion vulnerability, potentially leading to complete server compromise.

Affected Products

• InstaWP Connect – 1-click WP Staging & Migration plugin version 0.1.0.85 and earlier
• WordPress installations running vulnerable versions of the InstaWP Connect plugin

Discovery Timeline

• April 11, 2025 - CVE-2025-2636 published to NVD
• April 11, 2025 - Last updated in NVD database

Technical Details for CVE-2025-2636

Vulnerability Analysis

This vulnerability is classified as CWE-22 (Path Traversal), manifesting as a Local File Inclusion (LFI) weakness in the InstaWP Connect plugin's database manager component. The vulnerable code resides in the loader.php file within the database-manager module. The plugin fails to implement proper input validation and sanitization on the instawp-database-manager parameter, allowing attackers to traverse directory structures and include arbitrary files from the server filesystem.

The attack surface is particularly dangerous because it requires no authentication—any remote attacker can exploit this vulnerability without needing valid WordPress credentials. When successfully exploited, the attacker gains the ability to execute arbitrary PHP code within the context of the web server, effectively achieving Remote Code Execution (RCE).

Root Cause

The root cause of this vulnerability lies in insufficient input validation within the loader.php file located at includes/database-manager/loader.php. The code at line 77 processes the instawp-database-manager parameter without properly sanitizing path traversal sequences such as ../ or validating that the requested file resides within an expected directory. This allows attackers to escape the intended directory context and include files from arbitrary locations on the server filesystem.

Attack Vector

The attack vector is network-based and requires no privileges or user interaction. An unauthenticated remote attacker can craft malicious HTTP requests containing path traversal sequences in the instawp-database-manager parameter. The exploitation typically follows these steps:

1. The attacker identifies a WordPress installation running a vulnerable version of InstaWP Connect
2. The attacker crafts a request with directory traversal sequences (e.g., ../../) in the vulnerable parameter
3. The malicious request causes the server to include and execute an attacker-controlled file
4. In scenarios where file upload is possible (even with "safe" extensions like images), the attacker can upload a file containing PHP code disguised within image data, then use the LFI to execute it

The vulnerability details can be examined in the WordPress Plugin Code Review and the fix is documented in the WordPress Plugin Changeset Update.

Detection Methods for CVE-2025-2636

Indicators of Compromise

• Unusual HTTP requests containing path traversal sequences (../, ..%2f, ..%5c) targeting the instawp-database-manager parameter
• Web server logs showing requests to /wp-content/plugins/instawp-connect/ with suspicious query strings
• Unexpected PHP file executions or error messages related to file inclusion in WordPress error logs
• Evidence of unauthorized file access or creation in web server directories

Detection Strategies

• Implement Web Application Firewall (WAF) rules to detect and block path traversal patterns in HTTP requests
• Monitor web server access logs for requests containing instawp-database-manager parameter with suspicious values
• Deploy file integrity monitoring on WordPress installations to detect unauthorized changes
• Use security plugins that can detect and alert on Local File Inclusion attempts

Monitoring Recommendations

• Enable detailed logging for WordPress and the web server to capture request parameters
• Configure real-time alerting for requests matching path traversal patterns targeting the vulnerable endpoint
• Regularly review web server logs for reconnaissance activity targeting WordPress plugins
• Implement network-level monitoring for suspicious outbound connections from web servers that may indicate successful exploitation

How to Mitigate CVE-2025-2636

Immediate Actions Required

• Update the InstaWP Connect plugin immediately to a version newer than 0.1.0.85
• If immediate patching is not possible, temporarily disable the InstaWP Connect plugin
• Review web server logs for evidence of exploitation attempts
• Conduct a security assessment of WordPress installations that may have been exposed

Patch Information

The vulnerability has been addressed by the plugin developers. The security fix can be reviewed in the WordPress Plugin Changeset Update. Users should update to the latest version of InstaWP Connect available through the WordPress plugin repository. Additional vulnerability information is available in the Wordfence Vulnerability Report.

Workarounds

• Implement Web Application Firewall rules to block requests containing path traversal sequences in the instawp-database-manager parameter
• Restrict access to the WordPress admin and plugin directories using .htaccess or server configuration
• Use PHP's open_basedir directive to limit file access to specific directories
• Temporarily remove the vulnerable plugin files if the plugin is not critical to operations

# Apache .htaccess rule to block path traversal attempts
<IfModule mod_rewrite.c>
RewriteEngine On
RewriteCond %{QUERY_STRING} (\.\./) [NC,OR]
RewriteCond %{QUERY_STRING} (\.\.%2f) [NC,OR]
RewriteCond %{QUERY_STRING} (\.\.%5c) [NC]
RewriteRule ^.*$ - [F,L]
</IfModule>