CVE-2025-8874
📋 TL;DR
This vulnerability allows authenticated attackers with Contributor-level access or higher to inject malicious scripts into WordPress pages using the Master Addons plugin. The scripts execute whenever users view the compromised pages, enabling session hijacking, defacement, or malware distribution. All WordPress sites using Master Addons version 2.0.8.6 or earlier are affected.
💻 Affected Systems
- Master Addons – Elementor Addons with White Label, Free Widgets, Hover Effects, Conditions, & Animations
⚠️ 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, redirect users to malicious sites, install backdoors, or completely compromise the WordPress site and potentially the server.
Likely Case
Attackers with contributor access inject malicious scripts to steal user session cookies, display unwanted content, or redirect visitors to phishing pages.
If Mitigated
With proper user role management and input validation, impact is limited to defacement of specific pages rather than full site compromise.
🎯 Exploit Status
Exploitation requires authenticated access and knowledge of vulnerable widgets. No public exploit code is currently available.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Version 2.0.8.7 or later
Vendor Advisory: https://plugins.trac.wordpress.org/log/master-addons/
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins → Installed Plugins. 3. Find 'Master Addons' and click 'Update Now'. 4. Verify update completes successfully.
🔧 Temporary Workarounds
Restrict User Roles
allLimit contributor-level access to trusted users only and implement principle of least privilege.
Disable Vulnerable Widgets
allIdentify and disable specific Master Addons widgets mentioned in vulnerability details until patched.
🧯 If You Can't Patch
- Temporarily deactivate the Master Addons plugin if not essential for site functionality
- Implement web application firewall (WAF) rules to block XSS payloads targeting Master Addons endpoints
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin → Plugins → Installed Plugins for Master Addons version. If version is 2.0.8.6 or earlier, you are vulnerable.Check Version:
wp plugin list --name=master-addons --field=versionVerify Fix Applied:
After updating, verify Master Addons version shows 2.0.8.7 or higher in WordPress plugins list.📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests to Master Addons widget endpoints
- Suspicious JavaScript in page content from contributor-level users
Network Indicators:
- Unexpected script tags in page responses containing Master Addons widget identifiers
SIEM Query:
source="wordpress" AND ("master-addons" OR "master_addons") AND (method="POST" OR status=200) AND (uri CONTAINS "/wp-admin/" OR uri CONTAINS "widget")🔗 References
- https://plugins.trac.wordpress.org/browser/master-addons/trunk/assets/vendor/fancybox/jquery.fancybox.min.js
- https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3338452%40master-addons&new=3338452%40master-addons&sfp_email=&sfph_mail=
- https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3340128%40master-addons&new=3340128%40master-addons&sfp_email=&sfph_mail=
- https://plugins.trac.wordpress.org/log/master-addons/
- https://www.wordfence.com/threat-intel/vulnerabilities/id/44e4fb1b-eed4-4ef9-9856-7c5095117aa7?source=cve
