CVE-2025-22658: Appfolio Listings CSRF Vulnerability

CVE-2025-22658 Overview

CVE-2025-22658 is a Cross-Site Request Forgery (CSRF) vulnerability in the WordPress Listings for Appfolio plugin that enables attackers to perform Stored Cross-Site Scripting (XSS) attacks. This chained vulnerability allows malicious actors to trick authenticated administrators into unknowingly executing actions that inject persistent malicious scripts into the WordPress site.

Critical Impact

Attackers can leverage this CSRF-to-XSS chain to inject persistent malicious JavaScript into WordPress sites, potentially leading to session hijacking, admin account takeover, website defacement, or malicious redirects affecting all site visitors.

Affected Products

• Listings for Appfolio WordPress Plugin version 1.2.0 and earlier
• All previous versions of the listings-for-appfolio plugin

Discovery Timeline

• 2025-03-27 - CVE-2025-22658 published to NVD
• 2026-04-15 - Last updated in NVD database

Technical Details for CVE-2025-22658

Vulnerability Analysis

This vulnerability represents a dangerous chained attack where a CSRF weakness enables Stored XSS exploitation. The Listings for Appfolio WordPress plugin fails to implement proper CSRF token validation on form submissions that accept user-controllable input. Combined with insufficient input sanitization, this allows attackers to craft malicious requests that, when executed by an authenticated administrator, inject persistent JavaScript code into the WordPress database.

The attack is particularly concerning because it combines two vulnerability classes: the CSRF component allows the initial injection without direct authentication, while the Stored XSS component ensures the malicious payload persists and executes for all subsequent visitors to affected pages.

Root Cause

The root cause stems from two security deficiencies in the plugin:

1. Missing CSRF Protection (CWE-352): The plugin's form handlers do not properly verify WordPress nonces or implement other anti-CSRF measures, allowing cross-origin requests to be processed as legitimate.

2. Insufficient Output Encoding: User-supplied data stored through vulnerable endpoints is not properly sanitized before being rendered in the browser, enabling script injection.

Attack Vector

The attack requires the following conditions:

1. An attacker crafts a malicious HTML page containing a form that auto-submits to the vulnerable plugin endpoint
2. The attacker tricks an authenticated WordPress administrator into visiting the malicious page
3. The administrator's browser automatically submits the forged request containing XSS payloads
4. The malicious script is stored in the WordPress database
5. When any user visits a page displaying the compromised listing data, the stored JavaScript executes in their browser context

The vulnerability manifests in the plugin's listing management functionality where input fields are processed without proper CSRF validation and output encoding. For complete technical details, refer to the Patchstack Vulnerability Report.

Detection Methods for CVE-2025-22658

Indicators of Compromise

• Suspicious JavaScript code embedded in listing entries or plugin settings stored in the WordPress database
• Unexpected external script includes or iframe injections in page source
• Anomalous admin activity or settings changes that administrators do not recall making
• Browser console errors indicating blocked cross-origin requests or CSP violations

Detection Strategies

• Review WordPress database tables associated with the Listings for Appfolio plugin for suspicious HTML or JavaScript content
• Implement Web Application Firewall (WAF) rules to detect and block CSRF attack patterns targeting WordPress plugin endpoints
• Monitor HTTP request logs for suspicious POST requests to plugin endpoints originating from external referrers
• Enable Content Security Policy (CSP) headers to detect and report inline script execution attempts

Monitoring Recommendations

• Configure security plugins to alert on unauthorized changes to plugin settings or stored content
• Implement real-time monitoring for new or modified listing entries containing script tags or event handlers
• Set up log aggregation to correlate admin session activity with suspicious form submissions
• Deploy client-side JavaScript error monitoring to detect anomalous script execution

How to Mitigate CVE-2025-22658

Immediate Actions Required

• Update the Listings for Appfolio plugin to a patched version as soon as one becomes available
• Audit existing listing data in the WordPress database for any injected malicious scripts
• Review WordPress admin activity logs for signs of unauthorized changes
• Consider temporarily deactivating the plugin until a security patch is released

Patch Information

Plugin users should monitor the Patchstack Vulnerability Report for updates on available patches. Ensure the plugin is updated to a version higher than 1.2.0 when a security fix is released.

Workarounds

• Implement additional WordPress security plugins that provide CSRF protection at the application layer
• Configure web server or CDN-level WAF rules to block suspicious cross-site POST requests to plugin endpoints
• Restrict administrative access to trusted IP addresses to reduce the attack surface
• Educate administrators about phishing and social engineering attacks that could be used to trigger the CSRF vulnerability

# WordPress CLI command to check installed plugin version
wp plugin list --name=listings-for-appfolio --fields=name,version,status

# Search for potentially malicious script tags in plugin-related database tables
wp db query "SELECT * FROM wp_options WHERE option_value LIKE '%<script%' AND option_name LIKE '%appfolio%';"