CVE-2024-39662
📋 TL;DR
This stored cross-site scripting (XSS) vulnerability in the Black Widgets For Elementor WordPress plugin allows attackers to inject malicious scripts into web pages. When users view pages containing the malicious content, 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
- Black Widgets For Elementor WordPress Plugin
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Attackers could steal administrator session cookies, take over WordPress sites, deface websites, or redirect visitors to malicious sites, potentially leading to complete site compromise and data theft.
Likely Case
Attackers inject malicious JavaScript to steal user session cookies or credentials, potentially gaining administrative access to the WordPress site.
If Mitigated
With proper input validation and output encoding, malicious scripts would be neutralized before reaching users' browsers, preventing exploitation.
🎯 Exploit Status
Stored XSS vulnerabilities are commonly exploited. While no public PoC is confirmed, the vulnerability type suggests exploitation is straightforward for attackers with contributor-level access or higher.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 1.3.6 or later
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins → Installed Plugins. 3. Find 'Black Widgets For Elementor'. 4. Click 'Update Now' if available. 5. Alternatively, download version 1.3.6+ from WordPress.org and manually update.
🔧 Temporary Workarounds
Disable vulnerable plugin
allTemporarily disable the Black Widgets For Elementor plugin until patched
wp plugin deactivate black-widgets
Implement Content Security Policy
allAdd CSP headers to restrict script execution sources
Add to .htaccess: Header set Content-Security-Policy "default-src 'self'; script-src 'self'"
Or add to wp-config.php: header("Content-Security-Policy: default-src 'self'; script-src 'self'");
🧯 If You Can't Patch
- Remove the Black Widgets For Elementor plugin completely and use alternative widgets
- Implement web application firewall (WAF) rules to block XSS payloads
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin → Plugins → Installed Plugins for 'Black Widgets For Elementor' version. If version is 1.3.5 or lower, you are vulnerable.Check Version:
wp plugin get black-widgets --field=versionVerify Fix Applied:
After updating, verify the plugin version shows 1.3.6 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 followed by successful contributor/admin login
- Changes to page/post content containing JavaScript payloads
Network Indicators:
- Outbound connections to suspicious domains from your WordPress server
- Unusual traffic patterns to admin pages
SIEM Query:
source="wordpress.log" AND ("<script" OR "javascript:" OR "onload=" OR "onerror=")