CVE-2025-3056
📋 TL;DR
The Download Manager WordPress plugin allows authenticated attackers with Author-level access or higher to upload malicious SVG files containing stored XSS payloads. When users view these SVG files, arbitrary JavaScript executes in their browsers. All WordPress sites using Download Manager version 3.3.12 or earlier are affected.
💻 Affected Systems
- WordPress Download Manager 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
Attackers could steal administrator credentials, deface websites, redirect users to malicious sites, or perform actions on behalf of authenticated users.
Likely Case
Attackers with Author access inject malicious scripts that steal session cookies or user data from visitors viewing the SVG files.
If Mitigated
With proper user access controls and content security policies, impact is limited to the specific SVG file viewing context.
🎯 Exploit Status
Exploitation requires authenticated access but is straightforward via SVG file upload with embedded JavaScript.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 3.3.13
Vendor Advisory: https://plugins.trac.wordpress.org/changeset/3275196/
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins → Installed Plugins. 3. Find Download Manager and click 'Update Now'. 4. Verify version shows 3.3.13 or higher.
🔧 Temporary Workarounds
Disable SVG uploads
allAdd filter to WordPress to block SVG file uploads through Download Manager
Add to theme's functions.php: add_filter('upload_mimes', function($mimes) { unset($mimes['svg']); return $mimes; });
Restrict user roles
allLimit Author and higher roles to trusted users only
🧯 If You Can't Patch
- Temporarily disable the Download Manager plugin
- Implement Content Security Policy headers to restrict script execution from SVG files
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin → Plugins → Installed Plugins for Download Manager version 3.3.12 or lowerCheck Version:
wp plugin list --name='download-manager' --field=versionVerify Fix Applied:
Confirm Download Manager version shows 3.3.13 or higher after update📡 Detection & Monitoring
Log Indicators:
- Multiple SVG file uploads by Author-level users
- Unusual file upload patterns to Download Manager
Network Indicators:
- Requests to SVG files with suspicious parameters or content
SIEM Query:
source="wordpress.log" AND "uploaded file" AND ".svg" AND user_role="author"