CVE-2025-11701
📋 TL;DR
The Zip Attachments plugin for WordPress has an authorization bypass vulnerability that allows unauthenticated attackers to download attachments from private and password-protected posts. This affects all WordPress sites using Zip Attachments plugin versions 1.6 and earlier. The vulnerability exists due to missing capability checks and post status validation in the plugin's file download function.
💻 Affected Systems
- WordPress Zip Attachments plugin
⚠️ 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
Sensitive documents, confidential attachments, or proprietary files from password-protected posts are exfiltrated by attackers without authentication.
Likely Case
Attackers download attachments from private posts they shouldn't have access to, potentially exposing sensitive information or intellectual property.
If Mitigated
If proper access controls and monitoring are in place, unauthorized access attempts are detected and blocked before data exfiltration occurs.
🎯 Exploit Status
The vulnerability requires no authentication and appears to be straightforward to exploit based on the CVE description.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Version after 1.6
Vendor Advisory: http://plugins.trac.wordpress.org/browser/zip-attachments
Restart Required: No
Instructions:
1. Log into WordPress admin panel
2. Navigate to Plugins → Installed Plugins
3. Find Zip Attachments plugin
4. Click 'Update Now' if update is available
5. If no update is available, deactivate and delete the plugin immediately
🔧 Temporary Workarounds
Disable Zip Attachments Plugin
WordPressTemporarily disable the vulnerable plugin until a patched version is available
wp plugin deactivate zip-attachments
🧯 If You Can't Patch
- Implement web application firewall (WAF) rules to block requests to the vulnerable za_create_zip_callback endpoint
- Restrict access to the WordPress site using IP whitelisting or authentication gateways
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin panel → Plugins → Installed Plugins for Zip Attachments version 1.6 or earlierCheck Version:
wp plugin get zip-attachments --field=versionVerify Fix Applied:
Verify plugin version is greater than 1.6 in WordPress admin panel📡 Detection & Monitoring
Log Indicators:
- Unusual spikes in requests to /wp-admin/admin-ajax.php with action=za_create_zip_callback
- Requests for zip downloads from unauthenticated users
Network Indicators:
- HTTP POST requests to admin-ajax.php with za_create_zip_callback parameter from unauthorized IPs
SIEM Query:
source="wordpress.log" AND (uri_path="/wp-admin/admin-ajax.php" AND parameters.action="za_create_zip_callback") AND NOT user_authenticated=true