CVE-2025-53559
📋 TL;DR
This reflected cross-site scripting (XSS) vulnerability in the LambertGroup Universal Video Player - Addon for WPBakery Page Builder WordPress plugin allows attackers to inject malicious scripts into web pages. When a user visits a specially crafted URL, the script executes in their browser context, potentially stealing cookies, session tokens, or performing actions on their behalf. All WordPress sites using this plugin version 3.2.1 or earlier are affected.
💻 Affected Systems
- LambertGroup Universal Video Player - Addon for WPBakery Page 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 administrator session cookies, take over WordPress sites, deface websites, install backdoors, or redirect users to malicious sites.
Likely Case
Attackers steal user session cookies or credentials through phishing links, potentially compromising individual user accounts.
If Mitigated
With proper input validation and output encoding, malicious scripts are neutralized before reaching users' browsers.
🎯 Exploit Status
Reflected XSS vulnerabilities are commonly exploited through phishing campaigns. No authentication required to trigger the vulnerability.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 3.2.2 or later
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins → Installed Plugins. 3. Find 'Universal Video Player - Addon for WPBakery Page Builder'. 4. Click 'Update Now' if update available. 5. Alternatively, download latest version from WordPress repository and replace plugin files.
🔧 Temporary Workarounds
Disable vulnerable plugin
allTemporarily disable the plugin until patched version is available
wp plugin deactivate lbg-universal-video-player-addon-visual-composer
Implement WAF rules
allAdd web application firewall rules to block XSS payloads targeting this plugin
🧯 If You Can't Patch
- Implement Content Security Policy (CSP) headers to restrict script execution
- Use browser security extensions that block reflected XSS attacks
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin → Plugins → Installed Plugins for 'Universal Video Player - Addon for WPBakery Page Builder' version 3.2.1 or earlierCheck Version:
wp plugin get lbg-universal-video-player-addon-visual-composer --field=versionVerify Fix Applied:
Verify plugin version is 3.2.2 or later in WordPress admin panel📡 Detection & Monitoring
Log Indicators:
- Unusual GET requests containing script tags or JavaScript payloads in query parameters
- Multiple failed XSS attempts in web server logs
Network Indicators:
- HTTP requests with suspicious parameters containing <script>, javascript:, or encoded payloads
SIEM Query:
source="web_server_logs" AND (uri="*<script>*" OR uri="*javascript:*" OR uri="*%3Cscript%3E*")