CVE-2025-2800
📋 TL;DR
This stored XSS vulnerability in the WP Event Manager plugin allows unauthenticated attackers to inject malicious JavaScript into event organizer names. When users view pages containing the injected content, the scripts execute in their browsers. All WordPress sites using vulnerable plugin versions are affected.
💻 Affected Systems
- WP Event Manager – Events Calendar, Registrations, Sell Tickets with WooCommerce
📦 What is this software?
Wp Event Manager by Wp Eventmanager
⚠️ Risk & Real-World Impact
Worst Case
Attackers could steal administrator session cookies, take over WordPress sites, redirect users to malicious sites, or deploy ransomware payloads through visitor browsers.
Likely Case
Attackers will typically inject credential-stealing scripts, cryptocurrency miners, or redirect users to phishing pages to harvest login credentials.
If Mitigated
With proper web application firewalls and content security policies, script execution would be blocked, limiting impact to defacement or broken functionality.
🎯 Exploit Status
The vulnerability requires no authentication and exploitation is straightforward via HTTP POST requests to the organizer_name parameter.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 3.1.51 or later
Vendor Advisory: https://plugins.trac.wordpress.org/changeset/3318605/
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins → Installed Plugins. 3. Find WP Event Manager plugin. 4. Click 'Update Now' if available. 5. Alternatively, download version 3.1.51+ from WordPress.org and manually update.
🔧 Temporary Workarounds
Temporary Input Sanitization
allAdd custom sanitization filter for organizer_name parameter
Add to theme's functions.php: add_filter('pre_update_option_organizer_name', 'sanitize_text_field');
🧯 If You Can't Patch
- Disable the WP Event Manager plugin immediately
- Implement strict Content Security Policy headers to block inline script execution
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin → Plugins → WP Event Manager version. If version is 3.1.50 or lower, you are vulnerable.Check Version:
wp plugin get wp-event-manager --field=versionVerify Fix Applied:
After updating, verify plugin version shows 3.1.51 or higher in WordPress admin panel.📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests to event organizer endpoints containing script tags
- Multiple failed XSS attempts in web server logs
Network Indicators:
- HTTP requests with script payloads in organizer_name parameter
- Outbound connections to suspicious domains from event pages
SIEM Query:
source="web_server_logs" AND (organizer_name CONTAINS "<script>" OR organizer_name CONTAINS "javascript:")