CVE-2025-0450
📋 TL;DR
The Betheme WordPress plugin has a stored cross-site scripting (XSS) vulnerability that allows authenticated attackers with contributor-level access or higher to inject malicious scripts into website pages. These scripts execute whenever users visit the compromised pages, potentially stealing credentials or performing unauthorized actions. All WordPress sites using Betheme plugin versions up to 27.6.1 are affected.
💻 Affected Systems
- WordPress Betheme Theme/Plugin
📦 What is this software?
Betheme by Muffingroup
⚠️ Risk & Real-World Impact
Worst Case
Attackers could steal administrator credentials, take over the WordPress site, deface pages, redirect users to malicious sites, or install backdoors for persistent access.
Likely Case
Attackers inject malicious JavaScript to steal user session cookies, redirect visitors to phishing pages, or display unwanted advertisements.
If Mitigated
With proper input validation and output escaping, the vulnerability would be prevented, and only legitimate content would be displayed to users.
🎯 Exploit Status
Exploitation requires authenticated access but is technically simple once access is obtained.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 27.6.2 or later
Vendor Advisory: https://support.muffingroup.com/changelog/
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins → Installed Plugins. 3. Find Betheme plugin and click 'Update Now'. 4. Verify update to version 27.6.2 or higher.
🔧 Temporary Workarounds
Restrict User Roles
allLimit contributor-level access to trusted users only and implement principle of least privilege.
Content Security Policy
linuxImplement CSP headers to restrict script execution sources.
Header set Content-Security-Policy "default-src 'self'; script-src 'self'"
Header always set Content-Security-Policy "default-src 'self'" in Apache .htaccess
🧯 If You Can't Patch
- Disable the Betheme plugin entirely and use alternative themes/plugins.
- Implement web application firewall (WAF) rules to block XSS payloads in user inputs.
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin panel → Plugins → Installed Plugins for Betheme version. If version is 27.6.1 or lower, you are vulnerable.Check Version:
wp plugin list --name=betheme --field=version (if WP-CLI installed)Verify Fix Applied:
After updating, verify Betheme plugin version shows 27.6.2 or higher in WordPress admin.📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests to Betheme plugin endpoints with script tags or JavaScript in parameters
- Multiple failed login attempts followed by successful contributor-level login
Network Indicators:
- Outbound connections to suspicious domains from your WordPress server
- Unexpected JavaScript includes in page responses
SIEM Query:
source="wordpress.log" AND ("betheme" OR "muffingroup") AND ("<script" OR "javascript:" OR "onerror=" OR "onload=")