CVE-2024-10181
📋 TL;DR
The Newsletters plugin for WordPress has a stored XSS vulnerability in its newsletters_video shortcode. Authenticated attackers with contributor-level access or higher can inject malicious scripts that execute when users view affected pages. This affects all versions up to and including 4.9.9.4.
💻 Affected Systems
- WordPress Newsletters plugin
📦 What is this software?
Newsletters by Tribulant
⚠️ Risk & Real-World Impact
Worst Case
Attackers could steal admin credentials, deface websites, redirect users to malicious sites, or install backdoors for persistent access.
Likely Case
Attackers with contributor accounts inject malicious scripts to steal session cookies or redirect users to phishing pages.
If Mitigated
With proper access controls and content security policies, impact is limited to isolated script execution without data exfiltration.
🎯 Exploit Status
Exploitation requires contributor-level access. Attack vectors are well-documented in XSS exploitation frameworks.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 4.9.9.5
Vendor Advisory: https://plugins.trac.wordpress.org/changeset/3175816/
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins > Installed Plugins. 3. Find Newsletters plugin. 4. Click 'Update Now' if available. 5. If manual update needed, download version 4.9.9.5+ from WordPress.org. 6. Deactivate plugin. 7. Upload new version via FTP or file manager. 8. Reactivate plugin.
🔧 Temporary Workarounds
Remove contributor role access
allTemporarily restrict contributor-level users from accessing the site 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 wp-config.php: header("Content-Security-Policy: default-src 'self'; script-src 'self'");
🧯 If You Can't Patch
- Disable the newsletters_video shortcode functionality
- Remove contributor and author roles or implement strict user access reviews
🔍 How to Verify
Check if Vulnerable:
Check plugin version in WordPress admin > Plugins > Newsletters. If version is 4.9.9.4 or lower, you are vulnerable.Check Version:
wp plugin get newsletters-lite --field=versionVerify Fix Applied:
After updating, confirm plugin version shows 4.9.9.5 or higher in WordPress admin panel.📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests to wp-admin with newsletters_video parameters
- Multiple failed login attempts followed by successful contributor login
Network Indicators:
- Outbound connections to unknown domains after page loads
- Unexpected script tags in newsletter page responses
SIEM Query:
source="wordpress.log" AND ("newsletters_video" OR "contributor" AND "login")