CVE-2025-10041
📋 TL;DR
The Flex QR Code Generator WordPress plugin allows unauthenticated attackers to upload arbitrary files due to missing file type validation. This vulnerability affects all versions up to 1.2.5 and can lead to remote code execution on vulnerable WordPress sites.
💻 Affected Systems
- Flex QR Code Generator 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 via remote code execution, allowing attackers to install malware, steal data, or use the server for further attacks.
Likely Case
Attackers upload web shells to gain persistent access, deface websites, or install cryptocurrency miners.
If Mitigated
If proper file upload restrictions and web application firewalls are in place, exploitation attempts would be blocked or limited.
🎯 Exploit Status
Simple HTTP POST requests can exploit this vulnerability without authentication.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 1.2.6 or later
Vendor Advisory: https://wordpress.org/plugins/flex-qr-code-generator/
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins → Installed Plugins. 3. Find Flex QR Code Generator. 4. Click 'Update Now' if available. 5. If no update appears, deactivate and delete the plugin immediately.
🔧 Temporary Workarounds
Disable Plugin
allTemporarily disable the vulnerable plugin until patched.
wp plugin deactivate flex-qr-code-generator
Web Application Firewall Rule
allBlock file upload requests to the vulnerable endpoint.
Block POST requests to /wp-content/plugins/flex-qr-code-generator/*
🧯 If You Can't Patch
- Deactivate and remove the Flex QR Code Generator plugin immediately
- Implement strict file upload restrictions at the web server level
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin panel → Plugins → Flex QR Code Generator version numberCheck Version:
wp plugin get flex-qr-code-generator --field=versionVerify Fix Applied:
Verify plugin version is 1.2.6 or higher in WordPress admin📡 Detection & Monitoring
Log Indicators:
- POST requests to /wp-content/plugins/flex-qr-code-generator/qr-code-generator.php with file uploads
- Uploads of PHP, ASP, or other executable files
Network Indicators:
- Unusual file upload traffic to WordPress plugin directories
- HTTP 200 responses to file uploads from unauthenticated sources
SIEM Query:
source="web_logs" AND uri="/wp-content/plugins/flex-qr-code-generator/*" AND method="POST" AND status=200