CVE-2025-64224
📋 TL;DR
This vulnerability allows attackers to inject malicious scripts into web pages generated by the Grand Conference Theme Custom Post Type plugin for WordPress. When users visit pages containing the malicious scripts, attackers can steal session cookies, redirect users, or perform actions on their behalf. All WordPress sites using vulnerable versions of this plugin are affected.
💻 Affected Systems
- Grand Conference Theme Custom Post Type WordPress Plugin
📦 What is this software?
Grand Conference by Themegoods
⚠️ Risk & Real-World Impact
Worst Case
Attackers steal administrator session cookies, gain full control of the WordPress site, install backdoors, deface the site, or steal sensitive user data.
Likely Case
Attackers steal user session cookies, redirect visitors to malicious sites, or perform limited actions within user contexts.
If Mitigated
With proper input validation and output encoding, malicious scripts are neutralized before reaching users, preventing exploitation.
🎯 Exploit Status
Reflected XSS vulnerabilities are commonly exploited and require minimal technical skill. Attackers can craft malicious URLs containing script payloads.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 2.6.4
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins > Installed Plugins. 3. Find 'Grand Conference Theme Custom Post Type'. 4. Click 'Update Now' if available. 5. Alternatively, download version 2.6.4 from WordPress repository and manually update.
🔧 Temporary Workarounds
Input Validation Filter
allAdd custom input validation to sanitize user input before processing.
Add sanitization functions like esc_html() or esc_attr() in plugin template files where user input is displayed.
Content Security Policy
allImplement CSP headers to restrict script execution sources.
Add 'Content-Security-Policy: default-src 'self'; script-src 'self'' to .htaccess or web server configuration.
🧯 If You Can't Patch
- Disable the Grand Conference Theme Custom Post Type plugin immediately.
- Implement a web application firewall (WAF) with XSS protection rules.
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin panel > Plugins > Installed Plugins for Grand Conference Theme Custom Post Type version number.Check Version:
wp plugin list --name='grandconference-custom-post' --field=version (if WP-CLI installed)Verify Fix Applied:
Confirm plugin version is 2.6.4 or higher in WordPress admin panel.📡 Detection & Monitoring
Log Indicators:
- Unusual GET/POST requests containing script tags or JavaScript code in query parameters
- Multiple failed XSS attempts in web server logs
Network Indicators:
- HTTP requests with suspicious parameters like <script>, javascript:, or encoded payloads
SIEM Query:
source="web_logs" AND (uri="*<script>*" OR uri="*javascript:*" OR uri="*%3Cscript%3E*")