CVE-2025-31098
📋 TL;DR
This CVE describes a PHP Local File Inclusion vulnerability in the DeBounce Email Validator WordPress plugin. Attackers can exploit improper filename control in include/require statements to read sensitive files on the server. All WordPress sites using DeBounce Email Validator versions up to 5.7 are affected.
💻 Affected Systems
- Debounce DeBounce Email Validator 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 through reading sensitive files like /etc/passwd, database credentials, or session files, potentially leading to remote code execution.
Likely Case
Unauthorized access to sensitive server files containing configuration data, credentials, or user information.
If Mitigated
Limited information disclosure if file permissions are properly configured and sensitive files are protected.
🎯 Exploit Status
Exploitation requires knowledge of file paths but is straightforward once identified.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 5.8 or later
Restart Required: No
Instructions:
1. Log into WordPress admin panel
2. Navigate to Plugins > Installed Plugins
3. Find DeBounce Email Validator
4. Click 'Update Now' if update available
5. If no update available, download version 5.8+ from WordPress repository
6. Deactivate old plugin, upload new version, activate
🔧 Temporary Workarounds
Disable Plugin
allTemporarily disable the vulnerable plugin until patched
wp plugin deactivate debounce-io-email-validator
Restrict File Access
linuxConfigure web server to restrict access to sensitive directories
# Apache: Add to .htaccess
<FilesMatch "\.(php|inc|conf|config)$">
Order Deny,Allow
Deny from all
</FilesMatch>
# Nginx: Add to server block
location ~ /\.(php|inc|conf|config)$ {
deny all;
}
🧯 If You Can't Patch
- Remove the DeBounce Email Validator plugin completely
- Implement web application firewall rules to block LFI patterns
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin panel > Plugins > DeBounce Email Validator version. If version is 5.7 or lower, you are vulnerable.Check Version:
wp plugin get debounce-io-email-validator --field=versionVerify Fix Applied:
Verify plugin version is 5.8 or higher in WordPress admin panel and test LFI attempts return proper errors.📡 Detection & Monitoring
Log Indicators:
- Unusual file path requests in access logs
- Multiple requests to plugin files with ../ patterns
- Failed attempts to access sensitive system files
Network Indicators:
- HTTP requests containing ../ patterns targeting plugin files
- Unusual file extensions in URLs
SIEM Query:
source="web_access_logs" AND (url="*../*" OR url="*php*" OR url="*inc*") AND (url="*debounce*" OR url="*email-validator*")