CVE-2025-62990
📋 TL;DR
This stored XSS vulnerability in Livemesh Addons for Beaver Builder allows attackers to inject malicious scripts into web pages that persist across sessions. WordPress sites using this plugin are affected, potentially compromising visitor data and site integrity. The vulnerability exists in versions up to 3.9.2.
💻 Affected Systems
- Livemesh Addons for Beaver Builder
⚠️ Manual Verification Required
This CVE does not have specific version information in our database, so automatic vulnerability detection cannot determine if your system is affected.
Why? The CVE database entry doesn't specify which versions are vulnerable (no version ranges provided by the vendor/NVD).
🔒 Custom verification scripts are available for registered users. Sign up free to download automated test scripts.
- Review the CVE details at NVD
- Check vendor security advisories for your specific version
- Test if the vulnerability is exploitable in your environment
- Consider updating to the latest version as a precaution
⚠️ Risk & Real-World Impact
Worst Case
Attackers could steal session cookies, redirect users to malicious sites, deface websites, or perform actions on behalf of authenticated users, potentially leading to complete site takeover.
Likely Case
Attackers inject malicious scripts that steal user session data, redirect to phishing sites, or modify page content for malicious purposes.
If Mitigated
With proper input validation and output encoding, malicious scripts would be neutralized before reaching users, preventing exploitation.
🎯 Exploit Status
Stored XSS vulnerabilities typically have low exploitation complexity once the injection point is identified.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 3.9.3 or later
Restart Required: No
Instructions:
1. Log into WordPress admin panel
2. Navigate to Plugins > Installed Plugins
3. Find 'Livemesh Addons for Beaver Builder'
4. Click 'Update Now' if update is available
5. Verify plugin version is 3.9.3 or higher
🔧 Temporary Workarounds
Disable vulnerable plugin
allTemporarily disable the Livemesh Addons for Beaver Builder plugin until patched
wp plugin deactivate addons-for-beaver-builder
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 use WordPress CSP plugin
🧯 If You Can't Patch
- Implement web application firewall (WAF) rules to block XSS payloads
- Enable input validation and output encoding at application level
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin panel > Plugins > Installed Plugins for Livemesh Addons for Beaver Builder versionCheck Version:
wp plugin get addons-for-beaver-builder --field=versionVerify Fix Applied:
Verify plugin version is 3.9.3 or higher in WordPress admin panel📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests containing script tags or JavaScript code to plugin endpoints
- Multiple failed XSS attempts in web server logs
Network Indicators:
- Incoming requests with suspicious script payloads in parameters
- Outbound connections to unknown domains from user browsers
SIEM Query:
source="web_server" AND ("<script" OR "javascript:" OR "onload=" OR "onerror=") AND uri="*/wp-content/plugins/addons-for-beaver-builder/*"