CVE-2025-58996
📋 TL;DR
This vulnerability allows attackers to upload arbitrary files, including web shells, to WordPress servers running the Advanced Settings plugin. Attackers can gain full control of affected web servers. All WordPress sites using Advanced Settings version 3.1.1 or earlier are vulnerable.
💻 Affected Systems
- Helmut Wandl Advanced Settings WordPress 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
Complete server compromise leading to data theft, ransomware deployment, or use as attack infrastructure
Likely Case
Web shell installation enabling backdoor access, data exfiltration, and lateral movement
If Mitigated
File upload attempts blocked or logged for investigation
🎯 Exploit Status
Exploitation requires authenticated access to WordPress admin panel
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 3.1.2 or later
Restart Required: No
Instructions:
1. Log into WordPress admin panel
2. Navigate to Plugins > Installed Plugins
3. Find Advanced Settings plugin
4. Click 'Update Now' if update available
5. If no update available, deactivate and delete plugin immediately
🔧 Temporary Workarounds
Disable Advanced Settings Plugin
allTemporarily disable the vulnerable plugin until patched
wp plugin deactivate advanced-settings
Restrict File Uploads via Web Server
linuxConfigure web server to block uploads of executable files
# Add to .htaccess for Apache:
<FilesMatch "\.(php|phtml|php3|php4|php5|php7|phps|php-s|pht|phar)$">
Order Allow,Deny
Deny from all
</FilesMatch>
🧯 If You Can't Patch
- Remove Advanced Settings plugin completely from all WordPress installations
- Implement web application firewall rules to block file uploads to vulnerable endpoints
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin panel > Plugins > Advanced Settings for version numberCheck Version:
wp plugin get advanced-settings --field=versionVerify Fix Applied:
Verify Advanced Settings plugin version is 3.1.2 or later, or plugin is removed📡 Detection & Monitoring
Log Indicators:
- Unusual file uploads to wp-content/plugins/advanced-settings/
- POST requests to advanced-settings upload endpoints
- Execution of unexpected PHP files
Network Indicators:
- HTTP POST requests to /wp-content/plugins/advanced-settings/ with file uploads
- Unusual outbound connections from web server
SIEM Query:
source="web_server" AND (uri="*advanced-settings*" AND method="POST") AND (file_extension="php" OR file_extension="phtml" OR file_extension="phar")