CVE-2025-46245: CM Ad Changer CSRF Vulnerability

CVE-2025-46245 Overview

CVE-2025-46245 is a Cross-Site Request Forgery (CSRF) vulnerability affecting the CM Ad Changer WordPress plugin developed by CreativeMindsSolutions. This vulnerability allows attackers to trick authenticated administrators into performing unintended actions on the plugin's administrative interface through maliciously crafted requests.

The vulnerability exists due to missing or improper nonce verification in the plugin's form handling mechanisms, enabling attackers to forge requests that appear to originate from legitimate authenticated sessions.

Critical Impact

Attackers can manipulate ad configurations, inject malicious content, or modify plugin settings by exploiting this CSRF vulnerability, potentially leading to further compromise of the WordPress installation.

Affected Products

• CM Ad Changer plugin for WordPress versions up to and including 2.0.5
• WordPress installations using the vulnerable CM Ad Changer plugin
• Websites utilizing cminds:cm_ad_changer component

Discovery Timeline

• 2025-04-22 - CVE-2025-46245 published to NVD
• 2026-04-23 - Last updated in NVD database

Technical Details for CVE-2025-46245

Vulnerability Analysis

This Cross-Site Request Forgery (CSRF) vulnerability stems from inadequate request validation within the CM Ad Changer plugin's administrative functions. WordPress plugins that handle administrative operations must implement proper nonce verification to ensure requests originate from legitimate user interactions rather than forged requests from malicious sources.

When a WordPress administrator visits a malicious webpage while authenticated to their WordPress dashboard, the attacker's page can automatically submit hidden forms or trigger requests to the vulnerable plugin endpoints. Without proper CSRF token validation, the plugin processes these requests as if they were intentionally initiated by the administrator.

The impact of this vulnerability is significant as it allows attackers to perform any administrative action available within the CM Ad Changer plugin context, including modifying ad configurations, changing plugin settings, or potentially injecting malicious advertising content.

Root Cause

The root cause of CVE-2025-46245 is the absence or improper implementation of WordPress nonce verification in the plugin's form handlers and AJAX endpoints. WordPress provides built-in functions like wp_nonce_field(), wp_verify_nonce(), and check_admin_referer() specifically to prevent CSRF attacks. When plugins fail to implement these security mechanisms, they become vulnerable to forged cross-site requests.

The vulnerability affects all versions of the CM Ad Changer plugin through version 2.0.5, indicating that the security oversight exists across the plugin's codebase and was not introduced in a recent update.

Attack Vector

The attack scenario involves social engineering combined with the technical CSRF vulnerability. An attacker would:

1. Identify an administrative action within the CM Ad Changer plugin that lacks CSRF protection
2. Craft a malicious HTML page containing a hidden form that submits to the vulnerable WordPress endpoint
3. Lure an authenticated WordPress administrator to visit the malicious page
4. The administrator's browser automatically submits the forged request using their active WordPress session
5. The vulnerable plugin processes the request, executing the attacker's intended action

The vulnerability is exploitable over the network and requires user interaction (the administrator must visit the malicious page while authenticated). For detailed technical information about this vulnerability, refer to the Patchstack Vulnerability Report.

Detection Methods for CVE-2025-46245

Indicators of Compromise

• Unexpected changes to ad configurations or plugin settings without administrator action
• Referrer headers in access logs showing requests to CM Ad Changer endpoints originating from external domains
• Unusual administrative activity patterns, particularly changes made during times when administrators were not actively managing the site
• New or modified advertisements containing suspicious URLs or malicious content

Detection Strategies

• Monitor WordPress audit logs for configuration changes to the CM Ad Changer plugin
• Implement web application firewall (WAF) rules to detect and block requests with suspicious referrer patterns targeting WordPress admin endpoints
• Review server access logs for POST requests to CM Ad Changer administrative URLs with external or missing referrer headers
• Deploy endpoint detection solutions capable of identifying browser-based CSRF attack patterns

Monitoring Recommendations

• Enable comprehensive logging for all WordPress administrative actions
• Configure alerts for bulk or rapid changes to ad configurations
• Implement real-time monitoring of plugin settings modifications
• Establish baseline behavior patterns for administrative activities to identify anomalous actions

How to Mitigate CVE-2025-46245

Immediate Actions Required

• Update the CM Ad Changer plugin to a patched version when available from CreativeMindsSolutions
• Temporarily disable the CM Ad Changer plugin if it is not critical to site operations until a patch is released
• Implement additional CSRF protection at the web server or WAF level
• Educate administrators to avoid clicking unfamiliar links or visiting untrusted websites while authenticated to WordPress
• Consider using browser extensions that isolate administrative sessions

Patch Information

Currently, versions through 2.0.5 are confirmed vulnerable. Website administrators should monitor the WordPress plugin repository and the vendor's official channels for security updates addressing this CSRF vulnerability. Review the Patchstack Vulnerability Report for the latest remediation guidance.

Workarounds

• Restrict access to WordPress administrative interfaces using IP allowlisting or VPN requirements
• Implement additional authentication factors for administrative sessions
• Use a Web Application Firewall (WAF) with CSRF protection rules enabled
• Configure the SameSite=Strict cookie attribute for WordPress session cookies to limit cross-site request capabilities

# Apache .htaccess configuration to restrict admin access by IP
<Files "admin-ajax.php">
    Order Deny,Allow
    Deny from all
    Allow from 192.168.1.0/24
    Allow from YOUR_ADMIN_IP
</Files>

# Alternative: Add SameSite cookie attribute in wp-config.php
# Add the following to wp-config.php before "That's all, stop editing!"
# @ini_set('session.cookie_samesite', 'Strict');