CVE-2025-52790: WP-DownloadCounter CSRF Vulnerability

CVE-2025-52790 Overview

CVE-2025-52790 is a Cross-Site Request Forgery (CSRF) vulnerability affecting the WP-DownloadCounter WordPress plugin developed by r-win. This security flaw enables attackers to chain CSRF with Stored Cross-Site Scripting (XSS), allowing malicious actors to inject persistent scripts into vulnerable WordPress installations. The vulnerability requires user interaction, where an authenticated administrator must be tricked into clicking a malicious link while logged into their WordPress dashboard.

Critical Impact

Attackers can leverage this CSRF-to-Stored-XSS vulnerability chain to execute arbitrary JavaScript code in the context of other users' browsers, potentially leading to session hijacking, privilege escalation, or complete site compromise.

Affected Products

• WP-DownloadCounter WordPress plugin version 1.01 and earlier
• All WordPress installations running vulnerable versions of wp-downloadcounter

Discovery Timeline

• 2025-06-20 - CVE-2025-52790 published to NVD
• 2026-04-23 - Last updated in NVD database

Technical Details for CVE-2025-52790

Vulnerability Analysis

This vulnerability combines two distinct attack vectors: Cross-Site Request Forgery (CWE-352) and Stored Cross-Site Scripting. The WP-DownloadCounter plugin fails to implement proper CSRF token validation on critical administrative actions, enabling attackers to forge requests on behalf of authenticated users. When combined with the lack of output sanitization, attackers can persist malicious JavaScript payloads within the WordPress database.

The attack requires social engineering to trick an administrator into visiting a malicious page or clicking a crafted link while authenticated to the WordPress dashboard. Once the forged request is processed, the XSS payload becomes stored and executes whenever users access affected pages.

Root Cause

The root cause of this vulnerability stems from two fundamental security failures in the WP-DownloadCounter plugin: the absence of CSRF nonce verification in state-changing operations and inadequate input sanitization and output encoding when handling user-supplied data. WordPress provides built-in functions like wp_nonce_field() and wp_verify_nonce() for CSRF protection, and esc_html() or esc_attr() for output encoding, but the plugin fails to implement these security controls properly.

Attack Vector

The attack is network-based and requires user interaction. An attacker crafts a malicious HTML page containing a hidden form that submits data to the vulnerable plugin endpoint. When an authenticated WordPress administrator visits this page, the form auto-submits using JavaScript, sending a forged request that injects a malicious XSS payload into the plugin's stored data. Since the plugin does not verify CSRF tokens or sanitize input, the payload persists and executes when any user views the affected content.

The attacker typically hosts the malicious page on an external domain and distributes the link through phishing emails, social media, or compromised websites to lure administrators into triggering the attack.

Detection Methods for CVE-2025-52790

Indicators of Compromise

• Unexpected JavaScript code present in WP-DownloadCounter plugin configuration or counter data
• Suspicious HTTP POST requests to plugin endpoints from external referrers
• User reports of unusual browser behavior when viewing pages with download counters
• Audit logs showing configuration changes without corresponding administrator actions

Detection Strategies

• Monitor WordPress audit logs for unauthorized modifications to WP-DownloadCounter settings
• Implement Content Security Policy (CSP) headers to detect and block unauthorized script execution
• Review database entries associated with the plugin for embedded JavaScript or HTML tags
• Deploy web application firewall (WAF) rules to detect CSRF attack patterns targeting WordPress plugins

Monitoring Recommendations

• Enable WordPress security logging plugins to capture all administrative actions
• Configure alerts for changes to plugin settings from unexpected IP addresses or referrers
• Regularly scan database tables for suspicious content patterns indicative of stored XSS
• Monitor for outbound connections to unknown domains triggered by admin page visits

How to Mitigate CVE-2025-52790

Immediate Actions Required

• Disable or deactivate the WP-DownloadCounter plugin until a patched version becomes available
• Review plugin database tables for any existing malicious JavaScript payloads and remove them
• Audit administrator sessions and force password resets if compromise is suspected
• Implement a Web Application Firewall (WAF) to filter malicious requests targeting this vulnerability

Patch Information

As of the latest available information, versions through 1.01 remain vulnerable. No official patch has been documented in the CVE data. Administrators should monitor the Patchstack Vulnerability Report for updates and patch availability. Consider replacing the plugin with an actively maintained alternative that implements proper CSRF protection and input sanitization.

Workarounds

• Remove the WP-DownloadCounter plugin entirely and migrate to a more secure download tracking solution
• If the plugin must remain active, restrict administrative access to trusted IP addresses only
• Implement additional security layers using WordPress security plugins that provide CSRF protection
• Train administrators to avoid clicking links from untrusted sources while logged into WordPress
• Apply strict Content Security Policy headers to minimize the impact of any stored XSS execution

Administrators should consider the following WordPress security hardening configuration to reduce CSRF and XSS attack surface:

# Add to .htaccess or server configuration
# Restrict WordPress admin access by IP
<Files wp-admin>
    Order Deny,Allow
    Deny from all
    Allow from 192.168.1.0/24
</Files>

# Add security headers via wp-config.php
# define('FORCE_SSL_ADMIN', true);

# Consider adding CSP headers in your theme's functions.php
# header("Content-Security-Policy: script-src 'self'; object-src 'none';");