CVE-2025-48088
📋 TL;DR
This stored XSS vulnerability in Ultimate Addons for WPBakery Page Builder allows attackers to inject malicious scripts into WordPress pages. When users view compromised pages, the scripts execute in their browsers, potentially stealing session cookies or performing actions on their behalf. All WordPress sites using vulnerable versions of this plugin are affected.
💻 Affected Systems
- Ultimate Addons 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 credentials, take over WordPress sites, deface websites, or redirect visitors to malicious sites.
Likely Case
Attackers inject malicious JavaScript to steal user session cookies, potentially compromising user accounts and performing unauthorized actions.
If Mitigated
With proper input validation and output encoding, malicious scripts would be neutralized before reaching users' browsers.
🎯 Exploit Status
Exploitation requires ability to inject malicious input into web page generation, typically through plugin features that accept user input.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 3.21.1
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins > Installed Plugins. 3. Find 'Ultimate Addons for WPBakery Page Builder'. 4. Click 'Update Now' if update is available. 5. Alternatively, download version 3.21.1+ from WordPress repository and manually update.
🔧 Temporary Workarounds
Disable vulnerable plugin features
allIdentify and disable specific plugin features that accept user input until patch can be applied.
Implement Content Security Policy
allAdd CSP headers to restrict script execution sources and mitigate XSS impact.
Header set Content-Security-Policy "default-src 'self'; script-src 'self'" in .htaccess or web server config
🧯 If You Can't Patch
- Temporarily disable the Ultimate Addons plugin if not critical for site functionality
- Implement web application firewall (WAF) rules to block XSS payloads targeting this plugin
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin panel > Plugins > Installed Plugins for Ultimate Addons version. If version is below 3.21.1, you are vulnerable.Check Version:
wp plugin list --name='Ultimate Addons for WPBakery Page Builder' --field=version (if WP-CLI installed)Verify Fix Applied:
After updating, verify plugin version shows 3.21.1 or higher in WordPress plugins list.📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests to plugin endpoints containing script tags or JavaScript code
- Multiple failed attempts to access plugin admin features
Network Indicators:
- HTTP requests with suspicious parameters containing <script> tags or JavaScript payloads
SIEM Query:
source="web_logs" AND (uri_path="/wp-admin/admin-ajax.php" OR uri_path CONTAINS "ultimate_vc_addons") AND (http_method="POST" AND (request_body CONTAINS "<script>" OR request_body CONTAINS "javascript:"))