CVE-2025-4659 Overview
CVE-2025-4659 is a Full Path Disclosure vulnerability affecting the Integration for Salesforce and Contact Form 7, WPForms, Elementor, Formidable, Ninja Forms plugin for WordPress. The flaw exists in all versions up to and including 1.4.4. Unauthenticated attackers can retrieve the absolute filesystem path of the web application by triggering error conditions that expose server-side path information. The disclosed path is not directly exploitable on its own, but attackers commonly use this information to refine subsequent attacks such as Local File Inclusion (LFI), path traversal, or targeted exploitation of other vulnerabilities. The issue is categorized under CWE-200: Exposure of Sensitive Information to an Unauthorized Actor.
Critical Impact
Unauthenticated remote attackers can obtain the full server path of the affected WordPress installation, providing reconnaissance data that facilitates chained attacks against the site.
Affected Products
- Integration for Salesforce and Contact Form 7, WPForms, Elementor, Formidable, Ninja Forms plugin for WordPress
- All versions up to and including 1.4.4
- WordPress sites using the plugin with forms integrated to Salesforce
Discovery Timeline
- 2025-05-30 - CVE-2025-4659 published to NVD
- 2026-06-17 - Last updated in NVD database
Technical Details for CVE-2025-4659
Vulnerability Analysis
The plugin fails to suppress verbose PHP error output when unexpected input or state conditions occur during form processing. When triggered, the resulting error messages contain the absolute server path to the plugin files, exposing the directory structure of the WordPress installation. Because the vulnerable code path can be reached without authentication, any remote attacker can request the endpoint and harvest the path information from the server response.
Full Path Disclosure alone does not permit code execution or data modification. However, the information is valuable during the reconnaissance phase of an attack. Adversaries pair the disclosed path with vulnerabilities such as LFI, arbitrary file write, or log poisoning to construct working exploit payloads against the target host.
Root Cause
The root cause is improper error handling combined with a PHP configuration that permits error messages to be rendered in HTTP responses. The plugin does not validate or sanitize inputs before invoking functions that raise warnings or fatal errors containing __FILE__ or stack trace data. This behavior falls under CWE-200, Exposure of Sensitive Information to an Unauthorized Actor.
Attack Vector
An unauthenticated attacker sends a crafted HTTP request to a plugin endpoint that triggers a PHP warning or fatal error. The server response includes the full absolute path to the plugin file that raised the error. The attacker parses this path from the response body and uses it to construct payloads for follow-on vulnerabilities. No user interaction is required.
The vulnerability manifests through standard error output rather than a specific exploit primitive. See the Wordfence Vulnerability Report for technical details on the affected code paths.
Detection Methods for CVE-2025-4659
Indicators of Compromise
- HTTP responses from plugin endpoints containing absolute filesystem paths such as /var/www/html/wp-content/plugins/
- PHP warnings, notices, or fatal error strings returned to unauthenticated clients
- Unusual request patterns targeting plugin AJAX handlers or form-submission endpoints without valid parameters
Detection Strategies
- Inspect web server access logs for requests to plugin endpoints returning HTTP 200 responses with abnormally large payloads containing error output.
- Deploy web application firewall (WAF) rules that flag outbound responses containing PHP path strings or Warning:, Fatal error:, or Stack trace: tokens.
- Perform authenticated vulnerability scans against the WordPress installation to identify plugin versions at or below 1.4.4.
Monitoring Recommendations
- Monitor for repeated requests from a single source IP against plugin URIs that generate error responses.
- Enable centralized logging of PHP error_log output and alert on entries originating from the plugin directory.
- Track plugin inventory across WordPress deployments and correlate versions against published advisories.
How to Mitigate CVE-2025-4659
Immediate Actions Required
- Update the Integration for Salesforce and Contact Form 7, WPForms, Elementor, Formidable, Ninja Forms plugin to a version later than 1.4.4.
- Set display_errors = Off in php.ini on production WordPress servers to prevent error output in HTTP responses.
- Audit access logs for prior probing activity against plugin endpoints and investigate any follow-on activity from identified source IPs.
Patch Information
The vendor addressed the vulnerability in a plugin update following version 1.4.4. The fix is documented in the WordPress Change Log Entry. Administrators should apply the update through the WordPress plugin management console or by deploying the patched release from the plugin repository.
Workarounds
- Disable the plugin until the patched version can be installed if immediate updating is not feasible.
- Configure PHP to suppress error output to clients by setting display_errors = Off and routing errors to a server-side log file via log_errors = On.
- Deploy WAF response-body filters that strip or block responses containing absolute filesystem paths from plugin URIs.
# Configuration example: disable PHP error output in production
# /etc/php/8.2/fpm/php.ini
display_errors = Off
display_startup_errors = Off
log_errors = On
error_log = /var/log/php/error.log
# Reload PHP-FPM to apply changes
sudo systemctl reload php8.2-fpm
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
