CVE-2025-32642: Vite Coupon CSRF Vulnerability

CVE-2025-32642 Overview

CVE-2025-32642 is a Cross-Site Request Forgery (CSRF) vulnerability in the appsbd Vite Coupon WordPress plugin that enables Remote Code Inclusion. This vulnerability allows unauthenticated attackers to trick authenticated administrators into executing malicious requests, ultimately leading to remote code execution (RCE) on vulnerable WordPress installations.

Critical Impact

This vulnerability chains CSRF with Remote Code Inclusion, allowing attackers to execute arbitrary code on affected WordPress sites without requiring any privileges or user interaction beyond visiting a malicious page.

Affected Products

• Vite Coupon WordPress plugin versions through 1.0.7
• WordPress installations running vulnerable Vite Coupon plugin versions
• Web servers hosting affected WordPress sites

Discovery Timeline

• 2025-04-09 - CVE-2025-32642 published to NVD
• 2025-04-09 - Last updated in NVD database

Technical Details for CVE-2025-32642

Vulnerability Analysis

This vulnerability represents a dangerous chained attack vector combining Cross-Site Request Forgery (CSRF) with Remote Code Inclusion capabilities. The Vite Coupon plugin fails to implement proper CSRF token validation on critical administrative functions, allowing attackers to craft malicious requests that are executed in the context of an authenticated administrator's session.

When an authenticated administrator visits a malicious webpage or clicks a crafted link, the attacker can leverage the missing CSRF protections to include and execute remote code on the WordPress server. This attack chain effectively bypasses authentication requirements by exploiting the trust relationship between the browser and the WordPress application.

The vulnerability is classified under CWE-352 (Cross-Site Request Forgery), which indicates that the application does not properly verify that requests originated from a legitimate source. The impact scope extends beyond the vulnerable component, potentially compromising the entire hosting environment.

Root Cause

The root cause of this vulnerability lies in the Vite Coupon plugin's failure to implement proper anti-CSRF mechanisms on sensitive administrative endpoints. Specifically, the plugin does not validate WordPress nonce tokens or implement other CSRF mitigation techniques when processing requests that can lead to code inclusion. This architectural flaw allows attackers to forge requests that the server cannot distinguish from legitimate administrative actions.

Attack Vector

The attack exploits the network-accessible nature of WordPress installations. An attacker can host a malicious webpage containing auto-submitting forms or JavaScript that targets the vulnerable Vite Coupon plugin endpoints. When an authenticated WordPress administrator with the Vite Coupon plugin visits this malicious page, their browser automatically sends the crafted request with valid session cookies.

The attack sequence typically involves:

1. Attacker identifies a WordPress site running Vite Coupon plugin version 1.0.7 or earlier
2. Attacker crafts a malicious page containing a forged request to the vulnerable endpoint
3. Attacker tricks an authenticated administrator into visiting the malicious page
4. The administrator's browser sends the forged request with valid credentials
5. The server processes the request, resulting in remote code inclusion and execution

For detailed technical analysis and proof-of-concept information, refer to the Patchstack WordPress Vulnerability Analysis.

Detection Methods for CVE-2025-32642

Indicators of Compromise

• Unexpected outbound connections from the WordPress server to unknown external hosts
• Modified plugin files within the vite-coupon plugin directory
• Suspicious PHP files created in writable WordPress directories
• Unusual administrative activity in WordPress audit logs without corresponding user logins
• Web server access logs showing POST requests to Vite Coupon endpoints from external referrers

Detection Strategies

• Monitor WordPress administrative actions for requests lacking valid nonce tokens
• Implement Web Application Firewall (WAF) rules to detect CSRF attack patterns targeting WordPress plugins
• Review HTTP referrer headers for administrative POST requests originating from external domains
• Deploy file integrity monitoring on the WordPress installation directory to detect unauthorized modifications

Monitoring Recommendations

• Enable comprehensive WordPress audit logging to track all plugin-related administrative actions
• Configure alerts for new file creation events in the WordPress plugins and uploads directories
• Monitor network traffic for unusual code download patterns from the WordPress server
• Implement real-time alerting on changes to WordPress plugin configuration files

How to Mitigate CVE-2025-32642

Immediate Actions Required

• Immediately update the Vite Coupon plugin if a patched version is available
• If no patch is available, deactivate and remove the Vite Coupon plugin from all WordPress installations
• Review WordPress installations for signs of compromise including unexpected files or modified configurations
• Force logout all WordPress administrative sessions and require password resets
• Conduct a security audit of the affected WordPress server and hosting environment

Patch Information

Organizations should monitor the Patchstack WordPress Vulnerability Analysis for updates regarding patch availability. Until a security patch is released, the Vite Coupon plugin should be deactivated to eliminate the attack surface. WordPress administrators should enable automatic updates for security patches when available.

Workarounds

• Deactivate and delete the Vite Coupon plugin until a patched version is released
• Implement a Web Application Firewall (WAF) with CSRF protection rules to filter malicious requests
• Restrict WordPress administrative access to trusted IP addresses using .htaccess or server-level firewall rules
• Educate administrators to avoid clicking links or visiting untrusted websites while logged into WordPress

# Configuration example - Restrict WordPress admin access by IP in .htaccess
# Add to WordPress root .htaccess file
<Files wp-login.php>
    Order Deny,Allow
    Deny from all
    Allow from 192.168.1.0/24
    Allow from 10.0.0.1
</Files>

# Block direct access to Vite Coupon plugin directory
<Directory "/var/www/html/wp-content/plugins/vite-coupon">
    Order Deny,Allow
    Deny from all
</Directory>