CVE-2025-22343: wpSOL Plugin CSRF Vulnerability

CVE-2025-22343 Overview

CVE-2025-22343 is a Cross-Site Request Forgery (CSRF) vulnerability in the wpSOL WordPress plugin developed by koter84 that enables Stored Cross-Site Scripting (XSS) attacks. This chained vulnerability allows attackers to bypass CSRF protections and inject persistent malicious scripts into the WordPress site, potentially compromising site administrators and visitors.

Critical Impact

This vulnerability chains CSRF with Stored XSS, enabling attackers to execute arbitrary JavaScript in the context of authenticated users, potentially leading to session hijacking, administrative account compromise, and website defacement.

Affected Products

• wpSOL WordPress Plugin version 1.2.0 and earlier
• All versions from initial release through <= 1.2.0

Discovery Timeline

• 2025-01-07 - CVE-2025-22343 published to NVD
• 2026-04-15 - Last updated in NVD database

Technical Details for CVE-2025-22343

Vulnerability Analysis

This vulnerability represents a dangerous combination of two distinct web application security flaws: Cross-Site Request Forgery (CSRF) and Stored Cross-Site Scripting (XSS). The wpSOL plugin fails to implement proper CSRF token validation on forms that accept user input, which is then stored and rendered without adequate output encoding.

The attack chain works by first exploiting the missing CSRF protection to force an authenticated administrator to unknowingly submit a malicious request. The payload submitted through this forged request contains JavaScript code that gets stored in the WordPress database. When the stored content is subsequently rendered, the malicious script executes in the browser context of any user viewing the affected page.

This type of chained vulnerability (CWE-352: Cross-Site Request Forgery) is particularly dangerous in WordPress environments because administrative users typically have elevated privileges, and successful exploitation can lead to complete site compromise.

Root Cause

The root cause of this vulnerability is the absence of CSRF token validation (nonce verification) on state-changing requests within the wpSOL plugin, combined with insufficient input sanitization and output encoding when storing and displaying user-controlled data. WordPress provides built-in functions like wp_nonce_field() and wp_verify_nonce() for CSRF protection, as well as escaping functions like esc_html() and esc_attr() for XSS prevention, but these security mechanisms were not properly implemented in the affected plugin versions.

Attack Vector

The attack requires social engineering to lure an authenticated WordPress administrator to visit a malicious webpage or click a crafted link. The attacker's page contains a hidden form or JavaScript that automatically submits a request to the vulnerable wpSOL plugin endpoint, injecting malicious script content. Since the administrator's browser automatically includes authentication cookies, the forged request appears legitimate to the WordPress installation.

Once the XSS payload is stored, it executes whenever the poisoned content is rendered, which could affect:

• Other administrators viewing the same settings page
• Site visitors if the content is displayed on the frontend
• The original victim administrator on subsequent page loads

Detection Methods for CVE-2025-22343

Indicators of Compromise

• Unusual or unexpected JavaScript code stored in wpSOL plugin settings or database entries
• Suspicious form submissions to wpSOL plugin endpoints originating from external referrers
• Reports of unexpected redirects or pop-ups on WordPress admin pages
• Unauthorized modifications to plugin settings without administrator action

Detection Strategies

• Review WordPress database tables for unexpected <script> tags or JavaScript event handlers in wpSOL-related data
• Monitor HTTP request logs for POST requests to wpSOL endpoints with suspicious referrer headers
• Implement Content Security Policy (CSP) headers to detect and block inline script execution
• Use WordPress security plugins to scan for stored XSS patterns in database content

Monitoring Recommendations

• Enable detailed access logging on the WordPress installation to track requests to plugin endpoints
• Configure Web Application Firewall (WAF) rules to alert on CSRF patterns and XSS payloads
• Implement file integrity monitoring on wpSOL plugin files to detect unauthorized modifications
• Set up alerts for administrative setting changes outside of expected maintenance windows

How to Mitigate CVE-2025-22343

Immediate Actions Required

• Deactivate and remove the wpSOL plugin if it is not essential for site operations
• Review all wpSOL plugin settings and database entries for suspicious JavaScript code or HTML
• Audit WordPress admin user sessions and force re-authentication if compromise is suspected
• Implement a Web Application Firewall (WAF) with CSRF and XSS protection rules

Patch Information

As of the last update, users should check for updates beyond version 1.2.0 that address this vulnerability. Consult the Patchstack vulnerability database for the latest information on available patches and vendor advisories.

If no patch is available, consider replacing the plugin with an alternative solution that provides equivalent functionality with better security practices.

Workarounds

• Implement server-side CSRF validation using WordPress nonces for all wpSOL plugin forms as a temporary measure
• Add Content Security Policy headers to prevent inline script execution and reduce XSS impact
• Restrict access to the WordPress admin panel to trusted IP addresses only
• Use browser extensions or security tools that block CSRF attacks for administrative sessions