CVE-2025-53438
📋 TL;DR
This vulnerability allows attackers to include local files on the server through PHP's include/require statements, potentially leading to sensitive information disclosure or remote code execution. It affects WordPress FitLine theme users running version 1.6 or earlier. Attackers can exploit this without authentication if they can access vulnerable endpoints.
💻 Affected Systems
- WordPress FitLine Theme
📦 What is this software?
Fitline by Axiomthemes
⚠️ Risk & Real-World Impact
Worst Case
Full server compromise through Local File Inclusion leading to Remote Code Execution, allowing attackers to execute arbitrary code, access sensitive files like /etc/passwd or configuration files, and potentially take over the entire WordPress installation.
Likely Case
Sensitive file disclosure including WordPress configuration files (wp-config.php), server environment files, and potentially credential theft leading to further compromise.
If Mitigated
Limited impact with proper file permissions, web application firewalls, and restricted PHP configuration preventing file inclusion outside web root.
🎯 Exploit Status
Exploitation requires finding vulnerable endpoints but is straightforward once identified. Public proof-of-concept exists showing file inclusion patterns.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: > 1.6
Vendor Advisory: https://patchstack.com/database/Wordpress/Theme/fitline/vulnerability/wordpress-fitline-theme-1-6-local-file-inclusion-vulnerability?_s_id=cve
Restart Required: No
Instructions:
1. Log into WordPress admin panel
2. Navigate to Appearance > Themes
3. Check for FitLine theme update notification
4. Update to latest version (>1.6)
5. If no update available, replace with secure alternative theme
🔧 Temporary Workarounds
Disable vulnerable theme
allTemporarily switch to default WordPress theme to mitigate vulnerability
wp theme activate twentytwentyfour
wp theme deactivate fitline
Web Application Firewall rule
linuxBlock requests containing local file inclusion patterns
ModSecurity rule: SecRule ARGS "\.\./" "id:1001,phase:2,deny,status:403,msg:'Local File Inclusion attempt'
🧯 If You Can't Patch
- Implement strict file permissions (chmod 644 for PHP files, 755 for directories)
- Deploy web application firewall with LFI detection rules
🔍 How to Verify
Check if Vulnerable:
Check WordPress theme version in wp-content/themes/fitline/style.css or via WordPress admin panel > Appearance > ThemesCheck Version:
grep 'Version:' wp-content/themes/fitline/style.cssVerify Fix Applied:
Verify theme version is >1.6 and test vulnerable endpoints with safe test payloads📡 Detection & Monitoring
Log Indicators:
- HTTP requests with ../ patterns in parameters
- PHP include/require errors in error logs
- Access to sensitive files like wp-config.php
Network Indicators:
- Unusual file requests with directory traversal patterns
- Requests to theme files with parameter manipulation
SIEM Query:
source="web_access.log" AND (uri="*../*" OR uri="*/etc/passwd*" OR uri="*/wp-config.php*")