CVE-2025-46490
📋 TL;DR
This vulnerability allows attackers to upload arbitrary files, including web shells, to web servers running the Crossword Compiler Puzzles WordPress plugin. It affects all versions up to 5.2, enabling remote code execution and complete server compromise.
💻 Affected Systems
- Crossword Compiler Puzzles 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 takeover with persistent backdoor installation, data exfiltration, and lateral movement to other systems.
Likely Case
Web shell upload leading to website defacement, data theft, and cryptocurrency mining malware deployment.
If Mitigated
File uploads blocked at web application firewall level, limiting impact to denial of service attempts.
🎯 Exploit Status
Simple HTTP POST request with malicious file upload. Public exploit scripts available.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 5.3 or later
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins > Installed Plugins. 3. Find Crossword Compiler Puzzles. 4. Click 'Update Now' if available. 5. If no update available, deactivate and delete plugin immediately.
🔧 Temporary Workarounds
Web Application Firewall Rule
allBlock file uploads to vulnerable plugin endpoints
ModSecurity rule: SecRule REQUEST_URI "@contains /wp-content/plugins/crossword-compiler-puzzles/" "id:1001,phase:1,deny,status:403,msg:'Block Crossword Compiler Puzzles uploads'"
File System Permissions Restriction
linuxRemove write permissions from plugin upload directory
chmod -R 755 /var/www/html/wp-content/plugins/crossword-compiler-puzzles/
chown -R www-data:www-data /var/www/html/wp-content/plugins/crossword-compiler-puzzles/
🧯 If You Can't Patch
- Immediately deactivate and remove the Crossword Compiler Puzzles plugin from all WordPress installations
- Implement strict file upload validation at the web server level using .htaccess or nginx rules
🔍 How to Verify
Check if Vulnerable:
Check WordPress plugin version: wp plugin list --name=crossword-compiler-puzzles --field=versionCheck Version:
wp plugin get crossword-compiler-puzzles --field=versionVerify Fix Applied:
Confirm plugin version is 5.3 or higher: wp plugin get crossword-compiler-puzzles --field=version📡 Detection & Monitoring
Log Indicators:
- HTTP POST requests to /wp-content/plugins/crossword-compiler-puzzles/ with file uploads
- Files with .php, .phtml, .jsp extensions created in plugin directories
- Unusual process execution from web server user account
Network Indicators:
- Outbound connections from web server to unknown IPs on non-standard ports
- Large file uploads to plugin endpoints
SIEM Query:
source="web_server" AND (uri="/wp-content/plugins/crossword-compiler-puzzles/*" AND method="POST") AND (file_extension="php" OR file_extension="phtml" OR file_extension="jsp")