CVE-2024-39649
📋 TL;DR
This stored cross-site scripting (XSS) vulnerability in the Essential Addons for Elementor WordPress plugin allows attackers to inject malicious scripts into web pages. When users view affected pages, the scripts execute in their browsers, potentially stealing credentials or performing unauthorized actions. All WordPress sites using vulnerable versions of this plugin are affected.
💻 Affected Systems
- Essential Addons for Elementor WordPress plugin
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Attackers could steal administrator credentials, take over WordPress sites, deface websites, or redirect visitors to malicious sites.
Likely Case
Attackers inject malicious JavaScript to steal user session cookies, perform actions as authenticated users, or display phishing content.
If Mitigated
With proper input validation and output encoding, malicious scripts would be neutralized before reaching users' browsers.
🎯 Exploit Status
XSS vulnerabilities are commonly exploited, though specific exploit details for this CVE aren't publicly documented.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 5.9.27 or later
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins → Installed Plugins. 3. Find 'Essential Addons for Elementor'. 4. Click 'Update Now' if available. 5. Alternatively, download latest version from WordPress.org and manually update.
🔧 Temporary Workarounds
Disable vulnerable plugin
allTemporarily deactivate Essential Addons for Elementor until patched
Implement Content Security Policy
linuxAdd CSP headers to restrict script execution sources
Add to .htaccess: Header set Content-Security-Policy "default-src 'self'; script-src 'self'"
Add to nginx config: add_header Content-Security-Policy "default-src 'self'; script-src 'self'";
🧯 If You Can't Patch
- Implement web application firewall (WAF) rules to block XSS payloads
- Restrict plugin access to trusted users only using WordPress role capabilities
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin → Plugins → Essential Addons for Elementor → Version. If version is 5.9.26 or lower, you're vulnerable.Check Version:
wp plugin list --name='essential-addons-for-elementor' --field=versionVerify Fix Applied:
After updating, verify plugin version shows 5.9.27 or higher in WordPress admin panel.📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests to WordPress admin-ajax.php with script tags
- Multiple failed login attempts following suspicious content updates
Network Indicators:
- Outbound connections to suspicious domains from WordPress server
- Unexpected JavaScript includes in page responses
SIEM Query:
source="wordpress.log" AND ("admin-ajax.php" OR "wp-admin/post.php") AND ("<script>" OR "javascript:" OR "onerror=" OR "onload=")