CVE-2025-32679: Contact Form 7 Registration CSRF Flaw

CVE-2025-32679 Overview

CVE-2025-32679 is a Cross-Site Request Forgery (CSRF) vulnerability [CWE-352] in the ZealousWeb User Registration Using Contact Form 7 WordPress plugin. The flaw affects all versions from the initial release through version 2.4. An attacker can craft a malicious web page that, when visited by an authenticated user, submits unauthorized requests to a vulnerable WordPress site. The vulnerability requires user interaction and can lead to limited integrity and availability impact on the target site.

Critical Impact
Attackers can perform unauthorized state-changing actions on WordPress sites running the affected plugin by tricking authenticated users into clicking a crafted link or visiting a malicious page.

Affected Products

ZealousWeb User Registration Using Contact Form 7 plugin for WordPress
All versions from initial release through 2.4
WordPress sites with the plugin installed and active

Discovery Timeline

2025-04-09 - CVE-2025-32679 published to NVD
2026-06-17 - Last updated in NVD database

Technical Details for CVE-2025-32679

Vulnerability Analysis

The vulnerability arises because the plugin fails to validate the origin of incoming state-changing HTTP requests. WordPress provides a built-in nonce mechanism through functions such as wp_nonce_field() and check_admin_referer() to defend against CSRF. The affected plugin does not consistently enforce nonce verification on sensitive request handlers exposed by the User Registration Using Contact Form 7 component.

Because the request is processed using the victim's authenticated session, the server executes the action as if the user initiated it. Exploitation requires the victim to visit an attacker-controlled page while authenticated to the WordPress site. The impact is limited to integrity and availability, with no direct disclosure of confidential data.

Root Cause

The root cause is missing or insufficient anti-CSRF token validation on plugin request handlers. Without a nonce or equivalent origin check, the plugin cannot distinguish between a legitimate user-submitted form and a forged cross-site request. This maps directly to CWE-352: Cross-Site Request Forgery.

Attack Vector

An attacker hosts a malicious HTML page containing an auto-submitting form or JavaScript that targets a vulnerable endpoint of the plugin. The attacker delivers the link through phishing, social media, or an embedded iframe on a compromised site. When an authenticated WordPress user visits the page, the browser submits the request with the user's session cookies attached. The server processes the forged request under the user's privileges.

Refer to the Patchstack advisory for CVE-2025-32679 for additional technical context.

Detection Methods for CVE-2025-32679

Indicators of Compromise

Unexpected user account creations or profile modifications on WordPress sites running the affected plugin
HTTP POST requests to plugin endpoints with Referer headers pointing to external, untrusted domains
Access logs showing bursts of authenticated requests originating from sessions immediately after a user visited an external link

Detection Strategies

Inspect WordPress access logs for state-changing requests to user-registration-using-contact-form-7 endpoints that lack matching prior GET requests to legitimate forms
Compare Referer and Origin headers against the site's canonical domain and alert on mismatches
Review the WordPress plugin inventory and flag installations of User Registration Using Contact Form 7 at version 2.4 or earlier

Monitoring Recommendations

Enable verbose access logging on the web server and forward logs to a centralized analytics platform for correlation
Monitor the WordPress wp_users and wp_usermeta tables for unexpected inserts or updates
Alert on outbound links in emails or forum posts that target plugin action URLs with pre-filled parameters

How to Mitigate CVE-2025-32679

Immediate Actions Required

Identify all WordPress instances running User Registration Using Contact Form 7 version 2.4 or earlier and prioritize them for patching
Deactivate the plugin on affected sites until an updated version is installed if a fixed release is not yet available for your environment
Instruct administrators and privileged users to log out of WordPress sessions when not actively using the admin console

Patch Information

Consult the Patchstack vulnerability database entry and the ZealousWeb plugin page on the WordPress.org repository for the latest fixed version. Update the plugin through the WordPress admin dashboard under Plugins > Installed Plugins once a patched release is published.

Workarounds

Deploy a Web Application Firewall (WAF) rule that enforces same-origin Referer and Origin header checks on plugin endpoints
Restrict access to the WordPress admin area by IP allowlist where operationally feasible
Set the session cookie SameSite attribute to Lax or Strict at the application or reverse proxy layer to reduce cross-site request risk

bash

# Example nginx snippet to enforce Referer validation on plugin endpoints
location ~* /wp-admin/admin-ajax\.php {
    if ($http_referer !~* "^https?://your-domain\.com/") {
        return 403;
    }
    include fastcgi_params;
    fastcgi_pass php-fpm;
}