CVE-2025-4127
📋 TL;DR
This vulnerability allows authenticated WordPress users with Contributor-level access or higher to inject malicious scripts into the WP SEO Structured Data Schema plugin's 'Price Range' parameter. The scripts are stored and execute when administrators access the plugin settings page, potentially compromising administrative accounts. All WordPress sites using vulnerable plugin versions are affected.
💻 Affected Systems
- WP SEO Structured Data Schema plugin for WordPress
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Administrator account takeover leading to full site compromise, data theft, malware distribution, or complete website defacement.
Likely Case
Session hijacking of administrator accounts, credential theft, or injection of malicious content into the WordPress admin interface.
If Mitigated
Limited to plugin settings page only, with no impact on front-end users if proper user role management is enforced.
🎯 Exploit Status
Exploitation requires authenticated access but is straightforward once an attacker has Contributor-level credentials.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 2.7.12 or later
Vendor Advisory: https://plugins.trac.wordpress.org/changeset/3289009/wp-seo-structured-data-schema
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins → Installed Plugins. 3. Find 'WP SEO Structured Data Schema' and click 'Update Now'. 4. Verify plugin version is 2.7.12 or higher.
🔧 Temporary Workarounds
Disable vulnerable plugin
allTemporarily deactivate the WP SEO Structured Data Schema plugin until patched
wp plugin deactivate wp-seo-structured-data-schema
Restrict user roles
allLimit Contributor-level access and review user permissions
🧯 If You Can't Patch
- Implement strict input validation and output escaping for the 'Price Range' parameter
- Apply web application firewall rules to block XSS payloads targeting the plugin
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin → Plugins → Installed Plugins for WP SEO Structured Data Schema version 2.7.11 or lowerCheck Version:
wp plugin get wp-seo-structured-data-schema --field=versionVerify Fix Applied:
Confirm plugin version is 2.7.12 or higher in WordPress admin panel📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests to plugin settings page with script tags in parameters
- Multiple failed login attempts followed by successful Contributor-level login
Network Indicators:
- HTTP requests containing script payloads in 'price_range' parameter
- Unusual admin panel access patterns
SIEM Query:
source="wordpress.log" AND ("wp-seo-structured-data-schema" OR "price_range") AND ("<script>" OR "javascript:")