CVE-2025-12091
📋 TL;DR
This vulnerability allows authenticated WordPress users with Subscriber-level access or higher to deactivate the Search, Filters & Merchandising for WooCommerce plugin. Attackers can exploit a missing capability check on the 'wcis_save_email' endpoint to disable the plugin functionality.
💻 Affected Systems
- Search, Filters & Merchandising for WooCommerce (InstantSearch for WooCommerce)
⚠️ 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
Malicious authenticated users could deactivate the plugin, disrupting search and merchandising functionality for WooCommerce stores, potentially affecting sales and user experience.
Likely Case
Low-privilege authenticated users (including compromised accounts) could disable the plugin, requiring administrator intervention to restore functionality.
If Mitigated
With proper access controls and monitoring, impact is limited to temporary service disruption that can be quickly detected and restored.
🎯 Exploit Status
Exploitation requires authenticated access. The vulnerability is straightforward to exploit once an attacker has valid credentials.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 3.0.64
Vendor Advisory: https://plugins.trac.wordpress.org/browser/instantsearch-for-woocommerce/tags/3.0.64/public/wcis_plugin.php#L1074
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins → Installed Plugins. 3. Find 'Search, Filters & Merchandising for WooCommerce'. 4. Click 'Update Now' if available, or download version 3.0.64+ from WordPress repository. 5. Activate the updated plugin if it was deactivated.
🔧 Temporary Workarounds
Temporary Access Restriction
allRestrict access to the vulnerable endpoint by modifying .htaccess or web server configuration
# Add to .htaccess:
<Files "wcis_plugin.php">
Require all denied
</Files>
Role-Based Access Control
allTemporarily restrict Subscriber and other low-privilege roles from accessing plugin functionality
# Use WordPress role management plugin or add to functions.php:
add_filter('user_has_cap', 'restrict_plugin_access', 10, 4);
🧯 If You Can't Patch
- Monitor plugin status and logs for unauthorized deactivation attempts
- Implement strict access controls and review user accounts with Subscriber or higher privileges
🔍 How to Verify
Check if Vulnerable:
Check plugin version in WordPress admin panel under Plugins → Installed Plugins. If version is 3.0.63 or lower, you are vulnerable.Check Version:
wp plugin get instantsearch-for-woocommerce --field=versionVerify Fix Applied:
After updating, verify the plugin version shows 3.0.64 or higher and that the plugin remains active.📡 Detection & Monitoring
Log Indicators:
- POST requests to /wp-admin/admin-ajax.php with action=wcis_save_email from non-admin users
- Plugin deactivation events in WordPress logs
- Unauthorized access attempts to plugin endpoints
Network Indicators:
- HTTP POST requests to admin-ajax.php with wcis_save_email parameter from non-privileged IPs
SIEM Query:
source="wordpress.log" AND "wcis_save_email" AND user_role!="administrator"🔗 References
- https://plugins.trac.wordpress.org/browser/instantsearch-for-woocommerce/tags/3.0.64/public/wcis_plugin.php#L1074
- https://plugins.trac.wordpress.org/browser/instantsearch-for-woocommerce/trunk/public/wcis_plugin.php#L1074
- https://www.wordfence.com/threat-intel/vulnerabilities/id/daa8f941-6e87-4b94-8526-f73770fe6f82?source=cve
