CVE-2025-8422: Propovoice WordPress Information Disclosure

CVE-2025-8422 Overview

The Propovoice: All-in-One Client Management System plugin for WordPress contains an Arbitrary File Read vulnerability in all versions up to, and including, 1.7.6.7. The vulnerability exists in the send_email() function, which fails to properly validate file paths before reading file contents. This security flaw allows unauthenticated attackers to read the contents of arbitrary files on the server, potentially exposing sensitive information such as configuration files, database credentials, and other confidential data.

Critical Impact

Unauthenticated attackers can exploit this vulnerability to read sensitive server files including wp-config.php, database credentials, and other configuration files without any authentication requirements.

Affected Products

• Propovoice: All-in-One Client Management System plugin for WordPress versions up to and including 1.7.6.7

Discovery Timeline

• 2025-09-11 - CVE CVE-2025-8422 published to NVD
• 2026-04-15 - Last updated in NVD database

Technical Details for CVE-2025-8422

Vulnerability Analysis

This vulnerability is classified under CWE-73 (External Control of File Name or Path), which occurs when an application allows external input to control file system paths used in operations. In this case, the send_email() function within the Propovoice plugin does not adequately sanitize or validate user-supplied input before using it to read file contents.

The attack is network-accessible and requires no authentication or user interaction, making it particularly dangerous for WordPress sites running vulnerable versions of this plugin. Successful exploitation results in unauthorized access to sensitive file contents on the server, potentially compromising the confidentiality of the entire WordPress installation and underlying server.

Root Cause

The root cause of this vulnerability lies in improper input validation within the send_email() function located in the Email.php file. The function accepts file path parameters without properly sanitizing or restricting them to safe directories. This allows attackers to traverse the file system and access files outside the intended scope.

The vulnerable code can be reviewed in the WordPress Plugin Code Review. The fix applied in the WordPress Plugin Changeset addresses this issue by implementing proper path validation and sanitization.

Attack Vector

The attack vector is network-based, requiring no authentication or user interaction. An attacker can craft malicious requests to the WordPress REST API endpoint that handles the send_email() function, manipulating the file path parameter to include path traversal sequences (such as ../) or absolute paths to sensitive files.

The vulnerability mechanism involves:

1. Attacker sends a crafted HTTP request to the vulnerable endpoint
2. The send_email() function processes the malicious file path without adequate validation
3. The function reads and potentially returns the contents of arbitrary files
4. Sensitive information such as wp-config.php, .htaccess, or other configuration files can be exposed

For technical details on the exploitation mechanism, refer to the Wordfence Vulnerability Report.

Detection Methods for CVE-2025-8422

Indicators of Compromise

• HTTP requests to Propovoice email API endpoints containing path traversal sequences (../, ..%2f, etc.)
• Unusual access patterns to REST API endpoints associated with the Propovoice plugin
• Web server logs showing attempts to access sensitive files like wp-config.php through the plugin's email functionality
• Suspicious GET or POST requests to /wp-json/ routes related to the Propovoice email functionality

Detection Strategies

• Implement Web Application Firewall (WAF) rules to detect and block path traversal patterns in HTTP requests targeting WordPress REST API endpoints
• Monitor web server access logs for requests containing ../ sequences or attempts to access common sensitive files through the Propovoice plugin
• Deploy file integrity monitoring to detect unauthorized access to sensitive configuration files

Monitoring Recommendations

• Enable verbose logging for WordPress REST API requests and review logs for anomalous activity related to the Propovoice plugin
• Configure security information and event management (SIEM) alerts for path traversal attempt patterns
• Monitor for failed and successful file read operations on sensitive system files

How to Mitigate CVE-2025-8422

Immediate Actions Required

• Update the Propovoice plugin to version 1.7.6.8 or later immediately
• If immediate patching is not possible, temporarily disable the Propovoice plugin until the update can be applied
• Review server logs for any indicators of exploitation prior to patching
• Rotate any credentials that may have been exposed if exploitation is suspected (database passwords, WordPress secret keys, etc.)

Patch Information

The vulnerability has been addressed in the Propovoice plugin. Administrators should update to the latest version available through the WordPress plugin repository. The specific code changes can be reviewed in the WordPress Plugin Changeset.

To update the plugin:

1. Navigate to WordPress Admin Dashboard → Plugins → Installed Plugins
2. Locate "Propovoice: All-in-One Client Management System"
3. Click "Update Now" if an update is available
4. Verify the updated version is 1.7.6.8 or higher

Workarounds

• Disable the Propovoice plugin temporarily if an immediate update is not feasible
• Implement WAF rules to block requests containing path traversal patterns targeting the vulnerable endpoint
• Restrict access to the WordPress REST API using .htaccess rules or security plugins until the patch is applied

# Example .htaccess rule to block path traversal attempts
<IfModule mod_rewrite.c>
    RewriteEngine On
    RewriteCond %{QUERY_STRING} (\.\./|\.\.) [NC,OR]
    RewriteCond %{REQUEST_URI} (\.\./|\.\.) [NC]
    RewriteRule .* - [F,L]
</IfModule>