CVE-2024-50441
📋 TL;DR
A stored cross-site scripting (XSS) vulnerability in the Cozy Blocks 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. This affects all WordPress sites using Cozy Blocks plugin versions up to 2.0.15.
💻 Affected Systems
- CozyThemes Cozy Blocks WordPress Plugin
📦 What is this software?
Cozy Blocks by Cozythemes
⚠️ Risk & Real-World Impact
Worst Case
Attackers could steal administrator session cookies, take over WordPress sites, deface websites, or redirect visitors to malicious sites.
Likely Case
Attackers inject malicious JavaScript to steal user session cookies or credentials, potentially compromising user accounts.
If Mitigated
With proper input validation and output encoding, malicious scripts would be neutralized before reaching users' browsers.
🎯 Exploit Status
Stored XSS vulnerabilities are commonly exploited once discovered. Attackers need contributor-level access or higher to inject malicious scripts.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 2.0.16 or later
Vendor Advisory: https://patchstack.com/database/vulnerability/cozy-addons/wordpress-cozy-blocks-plugin-2-0-15-cross-site-scripting-xss-vulnerability?_s_id=cve
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins > Installed Plugins. 3. Find Cozy Blocks and click 'Update Now'. 4. Verify version is 2.0.16 or higher.
🔧 Temporary Workarounds
Disable Cozy Blocks Plugin
allTemporarily disable the vulnerable plugin until patched
wp plugin deactivate cozy-addons
Implement Content Security Policy
allAdd CSP headers to restrict script execution
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 administrators only
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin > Plugins > Installed Plugins for Cozy Blocks versionCheck Version:
wp plugin get cozy-addons --field=versionVerify Fix Applied:
Verify Cozy Blocks version is 2.0.16 or higher in WordPress admin📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests to WordPress admin-ajax.php with script tags
- Multiple failed login attempts followed by plugin modification
Network Indicators:
- HTTP requests containing <script> tags in POST parameters
- Outbound connections to suspicious domains after page loads
SIEM Query:
source="wordpress.log" AND ("cozy-blocks" OR "cozy-addons") AND ("<script>" OR "javascript:" OR "onerror=" OR "onload=")