CVE-2026-1756
📋 TL;DR
The WP FOFT Loader WordPress plugin has a vulnerability that allows authenticated attackers with Author-level access or higher to upload arbitrary files due to improper file type validation. This can lead to remote code execution on affected WordPress sites. All versions up to and including 2.1.39 are vulnerable.
💻 Affected Systems
- WP FOFT Loader 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
Full server compromise via remote code execution, allowing attackers to install backdoors, steal data, deface websites, or pivot to other systems.
Likely Case
Attackers upload web shells or malicious scripts to gain persistent access, modify content, or install malware.
If Mitigated
Limited impact if file uploads are restricted at server level or if attackers only have low-privilege accounts.
🎯 Exploit Status
Exploitation requires authenticated access but is straightforward once credentials are obtained.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 2.1.40
Vendor Advisory: https://plugins.trac.wordpress.org/changeset/3453101/wp-foft-loader/trunk/includes/class-wp-foft-loader-mimes.php
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins → Installed Plugins. 3. Find WP FOFT Loader and click 'Update Now'. 4. Verify version is 2.1.40 or higher.
🔧 Temporary Workarounds
Disable Plugin
allTemporarily disable the vulnerable plugin until patched.
wp plugin deactivate wp-foft-loader
Restrict File Uploads
linuxConfigure web server to block execution of uploaded files in wp-content/uploads directory.
# Add to .htaccess in uploads directory:
<FilesMatch "\.(php|php5|php7|phtml|phar)$">
Order Deny,Allow
Deny from all
</FilesMatch>
🧯 If You Can't Patch
- Remove Author and higher role permissions for untrusted users.
- Implement web application firewall rules to block suspicious file upload patterns.
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin panel → Plugins → Installed Plugins for WP FOFT Loader version 2.1.39 or lower.Check Version:
wp plugin get wp-foft-loader --field=versionVerify Fix Applied:
Confirm plugin version is 2.1.40 or higher in WordPress admin panel.📡 Detection & Monitoring
Log Indicators:
- Unusual file uploads to wp-content/uploads via POST requests
- PHP or executable files uploaded by Author+ role users
- 404 errors for newly uploaded suspicious files
Network Indicators:
- POST requests to /wp-admin/admin-ajax.php with file upload parameters
- Unusual outbound connections from WordPress server after file uploads
SIEM Query:
source="wordpress.log" AND ("upload" OR "admin-ajax") AND ("php" OR "exe" OR "phtml")🔗 References
- https://plugins.trac.wordpress.org/browser/wp-foft-loader/trunk/includes/class-wp-foft-loader-mimes.php?rev=3449144#L31
- https://plugins.trac.wordpress.org/browser/wp-foft-loader/trunk/includes/class-wp-foft-loader-mimes.php?rev=3449144#L45
- https://plugins.trac.wordpress.org/changeset/3453101/wp-foft-loader/trunk/includes/class-wp-foft-loader-mimes.php
- https://www.wordfence.com/threat-intel/vulnerabilities/id/cede8ff5-f739-4eb3-9672-5adb5d2ae0a9?source=cve
